Security Information / 2017 / Security Information -- DSA-3959-1 libgcrypt20

Debian Security Advisory

DSA-3959-1 libgcrypt20 -- security update

Date Reported:

29 Aug 2017

Affected Packages:

libgcrypt20

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 873383.
In Mitre's CVE dictionary: CVE-2017-0379.

More information:

Daniel Genkin, Luke Valenta and Yuval Yarom discovered that Libgcrypt is prone to a local side-channel attack against the ECDH encryption with Curve25519, allowing recovery of the private key.

See https://eprint.iacr.org/2017/806 for details.

For the stable distribution (stretch), this problem has been fixed in version 1.7.6-2+deb9u2.

For the unstable distribution (sid), this problem has been fixed in version 1.7.9-1.

We recommend that you upgrade your libgcrypt20 packages.