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
Plugin Details
Severity: High
ID: 74481
File Name: mandriva_MDVSA-2014-123.nasl
Version: 1.7
Type: local
Family: Mandriva Local Security Checks
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
MDVSA: 2014:123