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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
2 years ago
Modified
Modified
2 years 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.