Debian DSA-3877-1 : tor - security update

high Nessus Plugin ID 100728

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Synopsis

The remote Debian host is missing a security-related update.

Description

It has been discovered that Tor, a connection-based low-latency anonymous communication system, contain a flaw in the hidden service code when receiving a BEGIN_DIR cell on a hidden service rendezvous circuit. A remote attacker can take advantage of this flaw to cause a hidden service to crash with an assertion failure (TROVE-2017-005).

Solution

Upgrade the tor packages.

For the stable distribution (jessie), this problem has been fixed in version 0.2.5.14-1.

For the upcoming stable distribution (stretch), this problem will be fixed in version 0.2.9.11-1~deb9u1.

Plugin Details

Severity: High

ID: 100728

File Name: debian_DSA-3877.nasl

Version: 3.6

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/12/2017

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

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

Patch Publication Date: 6/10/2017

Reference Information

CVE: CVE-2017-0376

DSA: 3877

Detections

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