Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This vulnerability affects Thunderbird < 78.8.1.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1854-1 advisory.

  - Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import     task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This     vulnerability affects Thunderbird < 78.8.1. (CVE-2021-29950)

  - The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network,     grants normal remote users access to start or stop the service. This could be used to prevent the browser     update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface     in the maintenance service. *Note: This issue only affected Windows operating systems older than Win 10     build 1709. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.10.1,     Firefox < 87, and Firefox ESR < 78.10.1. (CVE-2021-29951)

  - 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)

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-2021:1854-1 advisory.

  - Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import     task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This     vulnerability affects Thunderbird < 78.8.1. (CVE-2021-29950)

  - The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network,     grants normal remote users access to start or stop the service. This could be used to prevent the browser     update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface     in the maintenance service. *Note: This issue only affected Windows operating systems older than Win 10     build 1709. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.10.1,     Firefox < 87, and Firefox ESR < 78.10.1. (CVE-2021-29951)

  - 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)

Note that Nessus has not tested for these issues 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-4936-1 advisory.

  - If Content Security Policy blocked frame navigation, the full destination of a redirect served in the     frame was reported in the violation report; as opposed to the original frame URI. This could be used to     leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23968)

  - As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need     to ensure that the source file is the URL requested by the page, pre-redirects. If thats not possible,     user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types     of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was     fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird <     78.8, and Firefox ESR < 78.8. (CVE-2021-23969)

  - When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted,     and the content of that error may have revealed information about the resource. This vulnerability affects     Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8. (CVE-2021-23973)

  - Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. 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 < 86, Thunderbird < 78.8, and     Firefox ESR < 78.8. (CVE-2021-23978)

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
151707	openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:1854-1)	Nessus	SuSE Local Security Checks	high
150685	SUSE SLED15 / SLES15 Security Update : MozillaThunderbird (SUSE-SU-2021:1854-1)	Nessus	SuSE Local Security Checks	high
149322	Ubuntu 20.04 LTS / 20.10 : Thunderbird vulnerabilities (USN-4936-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2021-29950

high

Tenable Plugins

high

high

high