DescriptionA flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs975002

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
m2crypto (PTS)buster0.31.0-4+deb10u2vulnerable
sid, trixie, bookworm0.38.0-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bullseye] - m2crypto <no-dsa> (Minor issue)
[buster] - m2crypto <no-dsa> (Minor issue)
[stretch] - m2crypto <no-dsa> (Minor issue) (restricted)

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