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GLSA-200508-16 : Tor: Information disclosure

medium Nessus Plugin ID 19536

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200508-16 (Tor: Information disclosure)

 The Diffie-Hellman implementation of Tor fails to verify the cryptographic strength of keys which are used during handshakes.
 Impact :

 By setting up a malicious Tor server and enticing users to use this server as first hop, a remote attacker could read and modify all traffic of the user.
 Workaround :

 There is no known workaround at this time.

Solution

All Tor users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/tor-0.1.0.14'

See Also

http://archives.seul.org/or/announce/Aug-2005/msg00002.html

https://security.gentoo.org/glsa/200508-16

Plugin Details

Severity: Medium

ID: 19536

File Name: gentoo_GLSA-200508-16.nasl

Version: 1.16

Type: local

Published: 8/30/2005

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:tor, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 8/25/2005

Vulnerability Publication Date: 8/5/2005

Reference Information

CVE: CVE-2005-2643

GLSA: 200508-16