Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package thunderbird (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-2306577
- published2 Dec 2021
- disclosed8 Dec 2021
Introduced: 2 Dec 2021
CVE-2021-43527 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu.
NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS #7, or PKCS #12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. Note: This vulnerability does NOT impact Mozilla Firefox. However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-43527
- https://bugzilla.mozilla.org/show_bug.cgi?id=1737470
- https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf
- https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/
- https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/
- https://security.gentoo.org/glsa/202212-05
- https://security.netapp.com/advisory/ntap-20211229-0002/
- https://www.mozilla.org/security/advisories/mfsa2021-51/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.starwindsoftware.com/security/sw-20220802-0001/