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GLSA-200904-11 : Tor: Multiple vulnerabilities

critical Nessus Plugin ID 36139

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-200904-11 (Tor: Multiple vulnerabilities)

 Theo de Raadt reported that the application does not properly drop privileges to the primary groups of the user specified via the 'User' configuration option (CVE-2008-5397).
 rovv reported that the 'ClientDNSRejectInternalAddresses' configuration option is not always enforced (CVE-2008-5398).
 Ilja van Sprundel reported a heap-corruption vulnerability that might be remotely triggerable on some platforms (CVE-2009-0414).
 It has been reported that incomplete IPv4 addresses are treated as valid, violating the specification (CVE-2009-0939).
 Three unspecified vulnerabilities have also been reported (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938).
 Impact :

 A local attacker could escalate privileges by leveraging unintended supplementary group memberships of the Tor process. A remote attacker could exploit these vulnerabilities to cause a heap corruption with unknown impact and attack vectors, to cause a Denial of Service via CPU consuption or daemon crash, and to weaken anonymity provided by the service.
 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-0.2.0.34'

See Also

https://security.gentoo.org/glsa/200904-11

Plugin Details

Severity: Critical

ID: 36139

File Name: gentoo_GLSA-200904-11.nasl

Version: 1.15

Type: local

Published: 4/11/2009

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/8/2009

Reference Information

CVE: CVE-2008-5397, CVE-2008-5398, CVE-2009-0414, CVE-2009-0936, CVE-2009-0937, CVE-2009-0938, CVE-2009-0939

BID: 33399

CWE: 264, 399

GLSA: 200904-11