Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package libgcrypt20 (opens in a new tab)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-LIBGCRYPT20-1066027
- published30 Jan 2021
- disclosed29 Jan 2021
Introduced: 29 Jan 2021
CVE-2021-3345 (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 libgcrypt20 package and not the libgcrypt20 package as distributed by Ubuntu.
_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-3345
- https://bugs.gentoo.org/show_bug.cgi?id=767814
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08
- https://gnupg.org
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
- https://www.oracle.com//security-alerts/cpujul2021.html