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Debian Security Advisory DSA 3959-1 (libgcrypt20 - security update)
Information
Severity
Severity
Medium
Family
Family
Debian Local Security Checks
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
6 years ago
Modified
Modified
2 years ago
Summary
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.
Affected Software
Affected Software
libgcrypt20 on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
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.