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Debian Security Advisory DSA 3408-1 (gnutls26 - security update)
Information
Severity
Severity
Medium
Family
Family
Debian Local Security Checks
CVSSv2 Base
CVSSv2 Base
4.3
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:M/Au:N/C:P/I:N/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
8 years ago
Modified
Modified
2 years ago
Summary
It was discovered that GnuTLS, a library implementing the TLS and SSL protocols, incorrectly validates the first byte of padding in CBC modes. A remote attacker can possibly take advantage of this flaw to perform a padding oracle attack.
Affected Software
Affected Software
gnutls26 on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (wheezy), this problem has been fixed in version 2.12.20-8+deb7u4. We recommend that you upgrade your gnutls26 packages.