Debian DLA-754-1 : tor security update

high Nessus Plugin ID 95954

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that Tor, a connection-based low-latency anonymous communication system, may read one byte past a buffer when parsing hidden service descriptors. This issue may enable a hostile hidden service to crash Tor clients depending on hardening options and malloc implementation.

For Debian 7 'Wheezy', these problems have been fixed in version 0.2.4.27-3.

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: 95954

File Name: debian_DLA-754.nasl

Version: 3.8

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/21/2016

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2016

Reference Information

CVE: CVE-2016-1254

Detections

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