CVE-2022-1473

NameCVE-2022-1473
DescriptionThe OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)buster, buster (security)1.1.1n-0+deb10u3fixed
bullseye (security), bullseye1.1.1n-0+deb11u3fixed
bookworm3.0.5-2fixed
sid3.0.5-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsourceexperimental3.0.3-1
opensslsource(unstable)(not affected)

Notes

- openssl <not-affected> (Only affects OpenSSL 3.0)
https://www.openssl.org/news/secadv/20220503.txt
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=64c85430f95200b6b51fe9475bd5203f7c19daf1 (openssl-3.0.3)

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