Mandriva Linux Security Advisory : tor (MDVSA-2014:123)

high Nessus Plugin ID 74481
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Synopsis

The remote Mandriva Linux host is missing a security update.

Description

Updated tor packages fix multiple vulnerabilities :

Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel setting on Intel Sandy Bridge and Ivy Bridge platforms, does not properly generate random numbers for relay identity keys and hidden-service identity keys, which might make it easier for remote attackers to bypass cryptographic protection mechanisms via unspecified vectors (CVE-2013-7295).

Update to version 0.2.4.22 solves these major and security problems :

- Block authority signing keys that were used on authorities vulnerable to the heartbleed bug in OpenSSL (CVE-2014-0160).

- Fix a memory leak that could occur if a microdescriptor parse fails during the tokenizing step.

- The relay ciphersuite list is now generated automatically based on uniform criteria, and includes all OpenSSL ciphersuites with acceptable strength and forward secrecy.

- Relays now trust themselves to have a better view than clients of which TLS ciphersuites are better than others.

- Clients now try to advertise the same list of ciphersuites as Firefox 28.

For other changes see the upstream change log

Solution

Update the affected tor package.

See Also

http://advisories.mageia.org/MGASA-2014-0059.html

http://advisories.mageia.org/MGASA-2014-0256.html

Plugin Details

Severity: High

ID: 74481

File Name: mandriva_MDVSA-2014-123.nasl

Version: 1.7

Type: local

Published: 6/12/2014

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.2

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

Temporal Vector: E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:tor, cpe:/o:mandriva:business_server:1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/11/2014

Exploitable With

Core Impact

Reference Information

CVE: CVE-2013-7295, CVE-2014-0160

BID: 64651, 66690

MDVSA: 2014:123