An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:4381 advisory.

  - A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of     Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further     memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a     malicious webpage. (CVE-2021-21775)

  - A use-after-free vulnerability exists in the way Webkit's GraphicsContext handles certain events in     WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory     corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
    (CVE-2021-21779)

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and     iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30663)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS     7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously     crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-30665)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious application may be able to leak     sensitive user information. (CVE-2021-30682)

  - A logic issue was addressed with improved state management. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content     may lead to universal cross site scripting. (CVE-2021-30689)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious website may be able to access     restricted ports on arbitrary servers. (CVE-2021-30720)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in     tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30734, CVE-2021-30749)

  - Description: A cross-origin issue with iframe elements was addressed with improved tracking of security     origins. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4,     watchOS 7.5. Processing maliciously crafted web content may lead to universal cross site scripting.
    (CVE-2021-30744)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari     14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to     arbitrary code execution. (CVE-2021-30758)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7,     Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-30795)

  - This issue was addressed with improved checks. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big     Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to code execution.
    (CVE-2021-30797)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS     14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30799)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:4381 advisory.

  - A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit     WebKitGTK 2.30.1. A specially crafted web page can lead to a use after free. (CVE-2020-13558)

  - Libraw before 0.20.1 has a stack buffer overflow via LibRaw::identify_process_dng_fields in identify.cpp.
    (CVE-2020-24870)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, Safari 14.0.1, tvOS 14.2, iTunes     12.11 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.
    (CVE-2020-27918)

  - Clear History and Website Data did not clear the history. The issue was addressed with improved data     deletion. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update     2020-007 Mojave, iOS 14.3 and iPadOS 14.3, tvOS 14.3. A user may be unable to fully delete browsing     history. (CVE-2020-29623)

  - autoar-extractor.c in GNOME gnome-autoar through 0.2.4, as used by GNOME Shell, Nautilus, and other     software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent     is a symlink to a directory outside of the intended extraction location. (CVE-2020-36241)

  - This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Maliciously crafted web content     may violate iframe sandboxing policy. (CVE-2021-1765)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4     and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code     execution. (CVE-2021-1788)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4     and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code     execution. (CVE-2021-1789)

  - A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big     Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS     14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on     arbitrary servers. (CVE-2021-1799)

  - This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4     and iPadOS 14.4. Maliciously crafted web content may violate iframe sandboxing policy. (CVE-2021-1801)

  - A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and     iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-1844)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2,     Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote     attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-1870, CVE-2021-1871)

  - A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of     Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further     memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a     malicious webpage. (CVE-2021-21775)

  - A use-after-free vulnerability exists in the way Webkit's GraphicsContext handles certain events in     WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory     corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
    (CVE-2021-21779)

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other     software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent     is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for     CVE-2020-36241. (CVE-2021-28650)

  - An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and     iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30663)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS     7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously     crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-30665)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious application may be able to leak     sensitive user information. (CVE-2021-30682)

  - A logic issue was addressed with improved state management. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content     may lead to universal cross site scripting. (CVE-2021-30689)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious website may be able to access     restricted ports on arbitrary servers. (CVE-2021-30720)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in     tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30734, CVE-2021-30749)

  - Description: A cross-origin issue with iframe elements was addressed with improved tracking of security     origins. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4,     watchOS 7.5. Processing maliciously crafted web content may lead to universal cross site scripting.
    (CVE-2021-30744)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari     14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to     arbitrary code execution. (CVE-2021-30758)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7,     Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-30795)

  - This issue was addressed with improved checks. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big     Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to code execution.
    (CVE-2021-30797)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS     14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30799)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202202-01 (WebkitGTK+: Multiple vulnerabilities)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4     and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code     execution. (CVE-2021-1788)

  - A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and     iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-1844)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2,     Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote     attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-1871)

  - A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of     Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further     memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a     malicious webpage. (CVE-2021-21775)

  - A use-after-free vulnerability exists in the way Webkit's GraphicsContext handles certain events in     WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory     corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
    (CVE-2021-21779)

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1,     iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously     crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-30661)

  - An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and     iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30663)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS     7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously     crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-30665)

  - A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3.
    Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a     report that this issue may have been actively exploited.. (CVE-2021-30666)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious application may be able to leak     sensitive user information. (CVE-2021-30682)

  - A logic issue was addressed with improved state management. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content     may lead to universal cross site scripting. (CVE-2021-30689)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious website may be able to access     restricted ports on arbitrary servers. (CVE-2021-30720)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in     tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30734, CVE-2021-30749)

  - Description: A cross-origin issue with iframe elements was addressed with improved tracking of security     origins. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4,     watchOS 7.5. Processing maliciously crafted web content may lead to universal cross site scripting.
    (CVE-2021-30744)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari     14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to     arbitrary code execution. (CVE-2021-30758)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 12.5.4.
    Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a     report that this issue may have been actively exploited.. (CVE-2021-30761)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.5.4.
    Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a     report that this issue may have been actively exploited.. (CVE-2021-30762)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7,     Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-30795)

  - This issue was addressed with improved checks. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big     Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to code execution.
    (CVE-2021-30797)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS     14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30799)

  - A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15,     tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary     code execution. (CVE-2021-30809)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.8 and     iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, Safari 15, watchOS 8. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2021-30818)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Monterey 12.0.1, iOS     14.8 and iPadOS 14.8, tvOS 15, Safari 15, watchOS 8. An attacker in a privileged network position may be     able to bypass HSTS. (CVE-2021-30823)

  - An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and     iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may     disclose restricted memory. (CVE-2021-30836)

  - A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and     iPadOS 14.8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2021-30846)

  - A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and     iPadOS 14.8, Safari 15, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code     execution. (CVE-2021-30848)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS     14.8 and iPadOS 14.8, watchOS 8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30849)

  - A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15,     tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code     execution. (CVE-2021-30851)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

  - The issue was resolved with additional restrictions on CSS compositing. This issue is fixed in tvOS 15,     watchOS 8, iOS 15 and iPadOS 15. Visiting a maliciously crafted website may reveal a user's browsing     history. (CVE-2021-30884)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Monterey 12.0.1, iOS     15.1 and iPadOS 15.1, watchOS 8.1, tvOS 15.1. Processing maliciously crafted web content may lead to     unexpectedly unenforced Content Security Policy. (CVE-2021-30887)

  - An information leakage issue was addressed. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS     Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1. A malicious website using Content     Security Policy reports may be able to leak information via redirect behavior . (CVE-2021-30888)

  - A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey     12.0.1, iOS 15.1 and iPadOS 15.1, watchOS 8.1, tvOS 15.1. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-30889)

  - A logic issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.0.1,     iOS 15.1 and iPadOS 15.1, watchOS 8.1, tvOS 15.1. Processing maliciously crafted web content may lead to     universal cross site scripting. (CVE-2021-30890)

  - An issue existed in the specification for the resource timing API. The specification was updated and the     updated specification was implemented. This issue is fixed in macOS Monterey 12.0.1. A malicious website     may exfiltrate data cross-origin. (CVE-2021-30897)

  - A buffer overflow issue was addressed with improved memory handling. This issue is fixed in tvOS 15.2,     macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30934)

  - A use after free issue was addressed with improved memory management. This issue is fixed in tvOS 15.2,     macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30936, CVE-2021-30951)

  - An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS     Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2021-30952)

  - An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS     Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2021-30953)

  - A type confusion issue was addressed with improved memory handling. This issue is fixed in tvOS 15.2,     macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30954)

  - A race condition was addressed with improved state handling. This issue is fixed in tvOS 15.2, macOS     Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web     content may lead to arbitrary code execution. (CVE-2021-30984)

  - BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that     allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by     the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to     host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process     remains otherwise confined. NOTE: this is similar to CVE-2021-41133. (CVE-2021-42762)

  - In WebKitGTK before 2.32.4, there is a use-after-free in WebCore::ContainerNode::firstChild, a different     vulnerability than CVE-2021-30889. (CVE-2021-45482)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-4381 advisory.

  - A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit     WebKitGTK 2.30.1. A specially crafted web page can lead to a use after free. (CVE-2020-13558)

  - Libraw before 0.20.1 has a stack buffer overflow via LibRaw::identify_process_dng_fields in identify.cpp.
    (CVE-2020-24870)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, Safari 14.0.1, tvOS 14.2, iTunes     12.11 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.
    (CVE-2020-27918)

  - A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big     Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS     14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on     arbitrary servers. (CVE-2021-1799)

  - This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4     and iPadOS 14.4. Maliciously crafted web content may violate iframe sandboxing policy. (CVE-2021-1801)

  - A logic issue was addressed with improved state management. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content     may lead to universal cross site scripting. (CVE-2021-30689)

  - This issue was addressed with improved checks. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big     Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to code execution.
    (CVE-2021-30797)

  - autoar-extractor.c in GNOME gnome-autoar through 0.2.4, as used by GNOME Shell, Nautilus, and other     software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent     is a symlink to a directory outside of the intended extraction location. (CVE-2020-36241)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7,     Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-30795)

  - This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. Maliciously crafted web content     may violate iframe sandboxing policy. (CVE-2021-1765)

  - A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4     and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code     execution. (CVE-2021-1788)

  - A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of     Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further     memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a     malicious webpage. (CVE-2021-21775)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2,     Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote     attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-1870, CVE-2021-1871)

  - A use-after-free vulnerability exists in the way Webkit's GraphicsContext handles certain events in     WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory     corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
    (CVE-2021-21779)

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other     software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent     is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for     CVE-2020-36241. (CVE-2021-28650)

  - Clear History and Website Data did not clear the history. The issue was addressed with improved data     deletion. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update     2020-007 Mojave, iOS 14.3 and iPadOS 14.3, tvOS 14.3. A user may be unable to fully delete browsing     history. (CVE-2020-29623)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur     11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4     and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code     execution. (CVE-2021-1789)

  - A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and     iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-1844)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS     14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30799)

  - Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in     tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing     maliciously crafted web content may lead to arbitrary code execution. (CVE-2021-30734, CVE-2021-30749)

  - Description: A cross-origin issue with iframe elements was addressed with improved tracking of security     origins. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4,     watchOS 7.5. Processing maliciously crafted web content may lead to universal cross site scripting.
    (CVE-2021-30744)

  - An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and     iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted     web content may lead to arbitrary code execution. (CVE-2021-30663)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS     7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously     crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may     have been actively exploited.. (CVE-2021-30665)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious application may be able to leak     sensitive user information. (CVE-2021-30682)

  - A logic issue was addressed with improved restrictions. This issue is fixed in tvOS 14.6, iOS 14.6 and     iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. A malicious website may be able to access     restricted ports on arbitrary servers. (CVE-2021-30720)

  - A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari     14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to     arbitrary code execution. (CVE-2021-30758)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:4381 advisory.

  - webkitgtk: Use-after-free in AudioSourceProviderGStreamer leading to arbitrary code execution     (CVE-2020-13558)

  - LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_fields() in identify.cpp (CVE-2020-24870)

  - webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2020-27918, CVE-2021-1788,     CVE-2021-30795)

  - webkitgtk: User may be unable to fully delete browsing history (CVE-2020-29623)

  - CVE-2021-28650 gnome-autoar: Directory traversal via directory symbolic links pointing outside of the     destination directory (incomplete  fix) (CVE-2020-36241)

  - webkitgtk: IFrame sandboxing policy violation (CVE-2021-1765, CVE-2021-1801)

  - webkitgtk: Type confusion issue leading to arbitrary code execution (CVE-2021-1789)

  - webkitgtk: Access to restricted ports on arbitrary servers via port redirection (CVE-2021-1799)

  - webkitgtk: Memory corruption issue leading to arbitrary code execution (CVE-2021-1844)

  - webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1870, CVE-2021-1871)

  - webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and     possibly code execution (CVE-2021-21775)

  - webkitgtk: Use-after-free in WebCore::GraphicsContext leading to information leak and possibly code     execution (CVE-2021-21779)

  - webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution (CVE-2021-21806)

  - gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination     directory (incomplete CVE-2020-36241 fix) (CVE-2021-28650)

  - webkitgtk: Integer overflow leading to arbitrary code execution (CVE-2021-30663)

  - webkitgtk: Memory corruption leading to arbitrary code execution (CVE-2021-30665)

  - webkitgtk: Logic issue leading to leak of sensitive user information (CVE-2021-30682)

  - webkitgtk: Logic issue leading to universal cross site scripting attack (CVE-2021-30689)

  - webkitgtk: Logic issue allowing access to restricted ports on arbitrary servers (CVE-2021-30720)

  - webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30734, CVE-2021-30749,     CVE-2021-30799)

  - webkitgtk: Cross-origin issue with iframe elements leading to universal cross site scripting attack     (CVE-2021-30744)

  - webkitgtk: Type confusion leading to arbitrary code execution (CVE-2021-30758)

  - webkitgtk: Insufficient checks leading to arbitrary code execution (CVE-2021-30797)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:4381 advisory.

  - webkitgtk: Use-after-free in AudioSourceProviderGStreamer leading to arbitrary code execution     (CVE-2020-13558)

  - LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_fields() in identify.cpp (CVE-2020-24870)

  - webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2020-27918, CVE-2021-1788,     CVE-2021-30795)

  - webkitgtk: User may be unable to fully delete browsing history (CVE-2020-29623)

  - CVE-2021-28650 gnome-autoar: Directory traversal via directory symbolic links pointing outside of the     destination directory (incomplete  fix) (CVE-2020-36241)

  - webkitgtk: IFrame sandboxing policy violation (CVE-2021-1765, CVE-2021-1801)

  - webkitgtk: Type confusion issue leading to arbitrary code execution (CVE-2021-1789)

  - webkitgtk: Access to restricted ports on arbitrary servers via port redirection (CVE-2021-1799)

  - webkitgtk: Memory corruption issue leading to arbitrary code execution (CVE-2021-1844)

  - webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1870, CVE-2021-1871)

  - webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and     possibly code execution (CVE-2021-21775)

  - webkitgtk: Use-after-free in WebCore::GraphicsContext leading to information leak and possibly code     execution (CVE-2021-21779)

  - webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution (CVE-2021-21806)

  - gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination     directory (incomplete CVE-2020-36241 fix) (CVE-2021-28650)

  - webkitgtk: Integer overflow leading to arbitrary code execution (CVE-2021-30663)

  - webkitgtk: Memory corruption leading to arbitrary code execution (CVE-2021-30665)

  - webkitgtk: Logic issue leading to leak of sensitive user information (CVE-2021-30682)

  - webkitgtk: Logic issue leading to universal cross site scripting attack (CVE-2021-30689)

  - webkitgtk: Logic issue allowing access to restricted ports on arbitrary servers (CVE-2021-30720)

  - webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30734, CVE-2021-30749,     CVE-2021-30799)

  - webkitgtk: Cross-origin issue with iframe elements leading to universal cross site scripting attack     (CVE-2021-30744)

  - webkitgtk: Type confusion leading to arbitrary code execution (CVE-2021-30758)

  - webkitgtk: Insufficient checks leading to arbitrary code execution (CVE-2021-30797)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1369-1 advisory.

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:3353-1 advisory.

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3353-1 advisory.

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3296-1 advisory.

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3282-1 advisory.

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim     needs to visit a malicious web site to trigger the vulnerability. (CVE-2021-21806)

  - A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and     iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code     execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
177194	Amazon Linux 2 : webkitgtk4 (ALAS-2023-2088)	Nessus	Amazon Linux Local Security Checks	critical
157823	Rocky Linux 8 : GNOME (RLSA-2021:4381)	Nessus	Rocky Linux Local Security Checks	critical
157596	AlmaLinux 8 : GNOME (ALSA-2021:4381)	Nessus	Alma Linux Local Security Checks	critical
157266	GLSA-202202-01 : WebkitGTK+: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
155421	Oracle Linux 8 : GNOME (ELSA-2021-4381)	Nessus	Oracle Linux Local Security Checks	critical
155153	RHEL 8 : GNOME (RHSA-2021:4381)	Nessus	Red Hat Local Security Checks	critical
155097	CentOS 8 : GNOME (CESA-2021:4381)	Nessus	CentOS Local Security Checks	critical
154228	openSUSE 15 Security Update : webkit2gtk3 (openSUSE-SU-2021:1369-1)	Nessus	SuSE Local Security Checks	high
154105	openSUSE 15 Security Update : webkit2gtk3 (openSUSE-SU-2021:3353-1)	Nessus	SuSE Local Security Checks	high
154093	SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2021:3353-1)	Nessus	SuSE Local Security Checks	high
153904	SUSE SLED12 / SLES12 Security Update : webkit2gtk3 (SUSE-SU-2021:3296-1)	Nessus	SuSE Local Security Checks	high
153868	SUSE SLES15 Security Update : webkit2gtk3 (SUSE-SU-2021:3282-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2021-21806

high

Tenable Plugins

critical

critical

critical

critical

critical

critical

critical

high

high

high

high

high