Debian DLA-663-1 : tor security update

high Nessus Plugin ID 94111

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Synopsis

The remote Debian host is missing a security update.

Description

It has been discovered that Tor treats the contents of some buffer chunks as if they were a NUL-terminated string. This issue could enable a remote attacker to crash a Tor client, hidden service, relay, or authority. This update aims to defend against this general class of security bugs.

For Debian 7 'Wheezy', this problem has been fixed in version 0.2.4.27-2.

For the stable distribution (jessie), this problem has been fixed in version 0.2.5.12-3., for unstable (sid) with version 0.2.8.9-1, and for experimental with 0.2.9.4-alpha-1.

Additionally, for wheezy this updates the set of authority directory servers to the one from Tor 0.2.8.7, released in August 2016.

We recommend that you upgrade your tor packages.

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.

Solution

Upgrade the affected tor, tor-dbg, and tor-geoipdb packages.

Plugin Details

Severity: High

ID: 94111

File Name: debian_DLA-663.nasl

Version: 2.3

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/19/2016

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:tor-dbg, p-cpe:/a:debian:debian_linux:tor-geoipdb, p-cpe:/a:debian:debian_linux:tor

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

Patch Publication Date: 10/18/2016

Detections

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