DescriptionA timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts. This flaw could potentially enable unauthorized RSA ciphertext decryption or signing, even without access to the corresponding private key.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
opencryptoki (PTS)buster3.8.1+dfsg-3.1vulnerable
sid, trixie, bookworm, bullseye3.8.1+dfsg-3.2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - opencryptoki <no-dsa> (Minor issue)
[bullseye] - opencryptoki <no-dsa> (Minor issue)
[buster] - opencryptoki <postponed> (Minor issue)
Fixed by:
Fixed by:
Fixed by:

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