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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

4 years ago

Modified

Modified

8 months 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.

Common Vulnerabilities and Exposures (CVE)