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 code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)stretch1.1.0l-1~deb9u1fixed
stretch (security)1.1.0l-1~deb9u6fixed
buster1.1.1n-0+deb10u1fixed
buster (security)1.1.1n-0+deb10u2fixed
bullseye1.1.1n-0+deb11u1fixed
bullseye (security)1.1.1n-0+deb11u2fixed
bookworm1.1.1o-1fixed
sid3.0.3-5fixed

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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