DescriptionLibgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.
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)
NVD severitymedium (attack range: remote)
Debian Bugs873383

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libgcrypt20 (PTS)jessie1.6.3-2+deb8u4fixed
jessie (security)1.6.3-2+deb8u5fixed
stretch (security), stretch1.7.6-2+deb9u3fixed
buster, sid1.8.4-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libgcrypt11source(unstable)(not affected)
libgcrypt20sourcejessie(not affected)


[jessie] - libgcrypt20 <not-affected> (Vulnerable code not present, no Curve25519 support)
- libgcrypt11 <not-affected> (Vulnerable code not present, no Curve25519 support);a=commitdiff;h=da780c8183cccc8f533c8ace8211ac2cb2bdee7b

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