Debian DLA-364-1 : gnutls26 security update

medium Nessus Plugin ID 87286


The remote Debian host is missing a security update.


Hanno Böck discovered that GnuTLS, a library implementing the TLS and SSL protocols, incorrectly validated the first padding byte in CBC modes. A remote attacker can possibly take advantage of this flaw to perform a padding oracle attack.

For Debian 6 'Squeeze', this issue has been fixed in gnutls26 version 2.8.6-1+squeeze6. We recommend you to upgrade your gnutls26 packages.

Learn more about the Debian Long Term Support (LTS) Project and how to apply these updates at:

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 87286

File Name: debian_DLA-364.nasl

Version: 1.7

Type: local

Agent: unix

Published: 12/10/2015

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N


Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:gnutls-bin, p-cpe:/a:debian:debian_linux:gnutls-doc, p-cpe:/a:debian:debian_linux:guile-gnutls, p-cpe:/a:debian:debian_linux:libgnutls-dev, p-cpe:/a:debian:debian_linux:libgnutls26, p-cpe:/a:debian:debian_linux:libgnutls26-dbg, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/9/2015

Vulnerability Publication Date: 12/20/2019

Reference Information

CVE: CVE-2015-8313