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Debian LTS: Security Advisory for gnutls28 (DLA-2759-1)

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

10 months ago

Modified

Modified

10 months ago

Summary

The remote host is missing an update for the 'gnutls28' package(s) announced via the DLA-2759-1 advisory.

Insight

Insight

GnuTLS, a portable cryptography library, fails to validate alternate trust chains in some conditions. In particular this breaks connecting to servers that use Let's Encrypt certificates, starting 2021-10-01.

Affected Software

Affected Software

'gnutls28' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 9 stretch, this problem has been fixed in version 3.5.8-5+deb9u6. We recommend that you upgrade your gnutls28 packages.