DescriptionA timing-based side-channel flaw exists in the perl-Crypt-OpenSSL-RSA package, which could be sufficient to recover plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1066969

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libcrypt-openssl-rsa-perl (PTS)bullseye0.31-1vulnerable
sid, trixie, bookworm0.33-3vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - libcrypt-openssl-rsa-perl <no-dsa> (Minor issue)
[bullseye] - libcrypt-openssl-rsa-perl <no-dsa> (Minor issue)
[buster] - libcrypt-openssl-rsa-perl <postponed> (Minor issue; side-channel timing attack)

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