Debian DSA-3741-1 : tor - security update

high Nessus Plugin ID 95956

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Synopsis

The remote Debian host is missing a security-related 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.

Solution

Upgrade the tor packages.

For the stable distribution (jessie), this problem has been fixed in version 0.2.5.12-4.

Plugin Details

Severity: High

ID: 95956

File Name: debian_DSA-3741.nasl

Version: 3.9

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/21/2016

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, 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, cpe:/o:debian:debian_linux:8.0

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

DSA: 3741

Detections

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