The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:1586 advisory.

  - A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big     Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-1817)

  - A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS     Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content     may result in the disclosure of process memory. (CVE-2021-1820)

  - An input validation issue was addressed with improved input validation. This issue is fixed in iTunes     12.11.3 for Windows, iCloud for Windows 12.3, macOS Big Sur 11.3, Safari 14.1, watchOS 7.4, tvOS 14.5, iOS     14.5 and iPadOS 14.5. Processing maliciously crafted web content may lead to a cross site scripting     attack. (CVE-2021-1825)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.3, iOS     14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may lead to     universal cross site scripting. (CVE-2021-1826)

  - 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)

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

The remote NewStart CGSL host, running version MAIN 6.02, has webkit2gtk3 packages installed that are affected by multiple vulnerabilities:

  - A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A     specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code     execution. An attacker can get a user to visit a webpage to trigger this vulnerability. (CVE-2020-13543)

  - An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.1 x64. A specially     crafted HTML web page can cause a use-after-free condition, resulting in a remote code execution. The     victim needs to visit a malicious web site to trigger this vulnerability. (CVE-2020-13584)

  - A type confusion issue was addressed with improved memory handling. This issue is fixed in Safari 14.0.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2020-9948)

  - A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0.
    Processing maliciously crafted web content may lead to arbitrary code execution. (CVE-2020-9951)

  - An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari     14.0. Processing maliciously crafted web content may lead to code execution. (CVE-2020-9983)

  - A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big     Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may     lead to arbitrary code execution. (CVE-2021-1817)

  - A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS     Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content     may result in the disclosure of process memory. (CVE-2021-1820)

  - An input validation issue was addressed with improved input validation. This issue is fixed in iTunes     12.11.3 for Windows, iCloud for Windows 12.3, macOS Big Sur 11.3, Safari 14.1, watchOS 7.4, tvOS 14.5, iOS     14.5 and iPadOS 14.5. Processing maliciously crafted web content may lead to a cross site scripting     attack. (CVE-2021-1825)

  - A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.3, iOS     14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may lead to     universal cross site scripting. (CVE-2021-1826)

  - 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)

Note that Nessus has not tested for these issues 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-2021:1586 advisory.

    GNOME is the default desktop environment of Red Hat Enterprise Linux.

    The following packages have been upgraded to a later upstream version: accountsservice (0.6.55),     webkit2gtk3 (2.30.4). (BZ#1846376, BZ#1883304)

    Security Fix(es):

    * webkitgtk: type confusion may lead to arbitrary code execution (CVE-2020-9948)

    * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-9951)

    * webkitgtk: out-of-bounds write may lead to code execution (CVE-2020-9983)

    * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-13543)

    * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-13584)

    * glib2: insecure permissions for files and directories (CVE-2019-13012)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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	Published	Updated	Severity
157789	Rocky Linux 8 : GNOME (RLSA-2021:1586)	Nessus	Rocky Linux Local Security Checks	2/9/2022	11/6/2023	high
160755	NewStart CGSL MAIN 6.02 : webkit2gtk3 Multiple Vulnerabilities (NS-SA-2022-0048)	Nessus	NewStart CGSL Local Security Checks	5/9/2022	4/25/2023	high
149698	RHEL 8 : GNOME (RHSA-2021:1586)	Nessus	Red Hat Local Security Checks	5/19/2021	3/19/2025	high
241427	RHEL 7 : webkitgtk4 (RHSA-2025:10364)	Nessus	Red Hat Local Security Checks	7/7/2025	9/24/2025	critical

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