Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.

The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4995-2 advisory.

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine. This     vulnerability affects Firefox < 85. (CVE-2021-23961)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
    (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. This vulnerability     affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23984)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR     78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some     of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9,     Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23987)

  - If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity     period of her key, but Alice's updated key has not yet been imported, an attacker may send an email     containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt     to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects     Thunderbird < 78.9.1. (CVE-2021-23991)

  - Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An     attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by     adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may     falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects     Thunderbird < 78.9.1. (CVE-2021-23992)

  - An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If     an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the     Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP     library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird <     78.9.1. (CVE-2021-23993)

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound     write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
    (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We     presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability     affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon     from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
    (CVE-2021-23998)

  - If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System     Principal and granted additional privileges that should not be granted to web content. This vulnerability     affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-23999)

  - When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would     have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This     vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-24002)

  - The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and     result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*.
    This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-29945)

  - Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed     port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR <     78.10, Thunderbird < 78.10, and Firefox < 88. (CVE-2021-29946)

  - Signatures are written to disk before and read during verification, which might be subject to a race     condition when a malicious local process or user is replacing the file. This vulnerability affects     Thunderbird < 78.10. (CVE-2021-29948)

  - When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially     attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been     infected with a malicious library of the alternative filename, and the malicious library has been copied     to a directory that is contained in the search path for executable libraries, then Thunderbird will load     the incorrect library. This vulnerability affects Thunderbird < 78.9.1. (CVE-2021-29949)

  - OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored     unencrypted on the user's local disk. The master password protection was inactive for those keys. Version     78.10.2 will restore the protection mechanism for newly imported keys, and will automatically protect keys     that had been imported using affected Thunderbird versions. This vulnerability affects Thunderbird <     78.10.2. (CVE-2021-29956)

  - If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an     additional unprotected part, Thunderbird did not indicate that only parts of the message are protected.
    This vulnerability affects Thunderbird < 78.10.2. (CVE-2021-29957)

  - Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of these     bugs showed evidence of memory corruption and we presume that with enough effort some of these could have     been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and     Firefox ESR < 78.11. (CVE-2021-29967)

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

The remote Ubuntu 20.04 LTS / 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4995-1 advisory.

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine. This     vulnerability affects Firefox < 85. (CVE-2021-23961)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    This vulnerability affects Firefox ESR < 78.9, Thunderbird < 78.9, and Firefox < 87. (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. This vulnerability affects Firefox ESR < 78.9, Thunderbird < 78.9, and Firefox < 87.
    (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. This vulnerability     affects Firefox ESR < 78.9, Thunderbird < 78.9, and Firefox < 87. (CVE-2021-23984)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR     78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some     of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9,     Thunderbird < 78.9, and Firefox < 87. (CVE-2021-23987)

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

The version of thunderbird installed on the remote host is prior to 78.10.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1644 advisory.

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine. This     vulnerability affects Firefox < 85. (CVE-2021-23961)

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

This update for MozillaThunderbird fixes the following issues :

  - Firefox was updated to 78.10.0 ESR (bsc#1184960)

  - CVE-2021-23994: Out of bound write due to lazy     initialization

  - CVE-2021-23995: Use-after-free in Responsive Design Mode

  - CVE-2021-23998: Secure Lock icon could have been spoofed

  - CVE-2021-23961: More internal network hosts could have     been probed by a malicious webpage

  - CVE-2021-23999: Blob URLs may have been granted     additional privileges

  - CVE-2021-24002: Arbitrary FTP command execution on FTP     servers using an encoded URL

  - CVE-2021-29945: Incorrect size computation in     WebAssembly JIT could lead to null-reads

  - CVE-2021-29946: Port blocking could be bypassed&#9; 

  - CVE-2021-29948: Race condition when reading from disk     while verifying signatures

This update was imported from the SUSE:SLE-15-SP2:Update update project.

The remote host is affected by the vulnerability described in GLSA-202104-09 (Mozilla Thunderbird: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Mozilla Thunderbird.
      Please review the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:1353 advisory.

  - Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

  - Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

  - Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

  - Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

  - Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

  - Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

  - Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

  - Mozilla: Port blocking could be bypassed (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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 a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-1353 advisory.

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine. This     vulnerability affects Firefox < 85. (CVE-2021-23961)

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound     write.  (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We     presume that with enough effort this could have been exploited to run arbitrary code.  (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon     from an HTTPS page.  (CVE-2021-23998)

  - If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System     Principal and granted additional privileges that should not be granted to web content.  (CVE-2021-23999)

  - When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would     have been interpreted as such and allowed arbitrary commands to be sent to the FTP server.
    (CVE-2021-24002)

  - The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and     result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.
    (CVE-2021-29945)

  - Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed     port blocking restrictions when used in the Alt-Svc header.  (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-1350 advisory.

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine. This     vulnerability affects Firefox < 85. (CVE-2021-23961)

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound     write.  (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We     presume that with enough effort this could have been exploited to run arbitrary code.  (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon     from an HTTPS page.  (CVE-2021-23998)

  - If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System     Principal and granted additional privileges that should not be granted to web content.  (CVE-2021-23999)

  - When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would     have been interpreted as such and allowed arbitrary commands to be sent to the FTP server.
    (CVE-2021-24002)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

  - The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and     result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.
    (CVE-2021-29945)

  - Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed     port blocking restrictions when used in the Alt-Svc header.  (CVE-2021-29946)

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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1351 advisory.

  - Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

  - Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

  - Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

  - Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

  - Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

  - Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

  - Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

  - Mozilla: Port blocking could be bypassed (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1353 advisory.

  - Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

  - Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

  - Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

  - Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

  - Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

  - Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

  - Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

  - Mozilla: Port blocking could be bypassed (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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 a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1352 advisory.

  - Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

  - Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

  - Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

  - Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

  - Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

  - Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

  - Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

  - Mozilla: Port blocking could be bypassed (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:1350 advisory.

  - Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

  - Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

  - Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

  - Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

  - Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

  - Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

  - Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

  - Mozilla: Port blocking could be bypassed (CVE-2021-29946)

  - Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure.
In adddition a number of security issues were addressed in the OpenPGP support.

For Debian 9 stretch, these problems have been fixed in version 1:78.10.0-1~deb9u1.

We recommend that you upgrade your thunderbird packages.

For the detailed security status of thunderbird please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/thunderbird

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure.
In addition a number of security issues were addressed in the OpenPGP support.

The version of Thunderbird installed on the remote Windows host is prior to 78.10. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-14 advisory.

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound     write. (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We     presume that with enough effort this could have been exploited to run arbitrary code. (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon     from an HTTPS page. (CVE-2021-23998)

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine.
    (CVE-2021-23961)

  - If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System     Principal and granted additional privileges that should not be granted to web content. (CVE-2021-23999)

  - When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would     have been interpreted as such and allowed arbitrary commands to be sent to the FTP server.
    (CVE-2021-24002)

  - The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and     result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.
    (CVE-2021-29945)

  - Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed     port blocking restrictions when used in the Alt-Svc header. (CVE-2021-29946)

  - Signatures are written to disk before and read during verification, which might be subject to a race     condition when a malicious local process or user is replacing the file. (CVE-2021-29948)

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

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 78.10. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-14 advisory.

  - A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound     write. (CVE-2021-23994)

  - When Responsive Design Mode was enabled, it used references to objects that were previously freed. We     presume that with enough effort this could have been exploited to run arbitrary code. (CVE-2021-23995)

  - Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon     from an HTTPS page. (CVE-2021-23998)

  - Further techniques that built on the slipstream research combined with a malicious webpage could have     exposed both an internal network's hosts as well as services running on the user's local machine.
    (CVE-2021-23961)

  - If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System     Principal and granted additional privileges that should not be granted to web content. (CVE-2021-23999)

  - When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would     have been interpreted as such and allowed arbitrary commands to be sent to the FTP server.
    (CVE-2021-24002)

  - The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and     result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.
    (CVE-2021-29945)

  - Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed     port blocking restrictions when used in the Alt-Svc header. (CVE-2021-29946)

  - Signatures are written to disk before and read during verification, which might be subject to a race     condition when a malicious local process or user is replacing the file. (CVE-2021-29948)

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

ID	Name	Product	Family	Severity
151017	Ubuntu 18.04 LTS : Thunderbird vulnerabilities (USN-4995-2)	Nessus	Ubuntu Local Security Checks	high
150949	Ubuntu 20.04 LTS : Thunderbird vulnerabilities (USN-4995-1)	Nessus	Ubuntu Local Security Checks	high
149863	Amazon Linux 2 : thunderbird (ALAS-2021-1644)	Nessus	Amazon Linux Local Security Checks	high
149577	openSUSE Security Update : MozillaThunderbird (openSUSE-2021-644)	Nessus	SuSE Local Security Checks	high
149226	GLSA-202104-09 : Mozilla Thunderbird: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
149026	CentOS 8 : thunderbird (CESA-2021:1353)	Nessus	CentOS Local Security Checks	high
149021	Oracle Linux 8 : thunderbird (ELSA-2021-1353)	Nessus	Oracle Linux Local Security Checks	high
148998	Oracle Linux 7 : thunderbird (ELSA-2021-1350)	Nessus	Oracle Linux Local Security Checks	high
148985	RHEL 8 : thunderbird (RHSA-2021:1351)	Nessus	Red Hat Local Security Checks	high
148984	RHEL 8 : thunderbird (RHSA-2021:1353)	Nessus	Red Hat Local Security Checks	high
148983	RHEL 8 : thunderbird (RHSA-2021:1352)	Nessus	Red Hat Local Security Checks	high
148981	RHEL 7 : thunderbird (RHSA-2021:1350)	Nessus	Red Hat Local Security Checks	high
148965	Debian DLA-2632-1 : thunderbird security update	Nessus	Debian Local Security Checks	high
148964	Debian DSA-4897-1 : thunderbird - security update	Nessus	Debian Local Security Checks	high
148773	Mozilla Thunderbird < 78.10	Nessus	Windows	high
148772	Mozilla Thunderbird < 78.10	Nessus	MacOS X Local Security Checks	high

Detections

Analytics

CVE-2021-29948

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Tenable Plugins

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