ID

VAR-201209-0470

CVE

CVE-2012-4922

TITLE

Tor of common/util.c Service disruption in (DoS) Vulnerabilities

DESCRIPTION

The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed directory object, a different vulnerability than CVE-2012-4419. Tor (The Onion Router) is an implementation of the second generation of onion routing, which allows users to communicate anonymously over the Internet. Tor is prone to multiple denial-of-service vulnerabilities. Exploiting these issues can allow attackers to crash the affected computer, denying service to legitimate users. Versions prior to Tor 0.2.2.39 and 0.2.3.22-rc are vulnerable. The title and technical details have been changed to better reflect the underlying component affected. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201301-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Tor: Multiple vulnerabilities Date: January 08, 2013 Bugs: #432188, #434882, #444804 ID: 201301-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Tor, allowing attackers to cause Denial of Service or obtain sensitive information. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/tor < 0.2.3.25 >= 0.2.3.25 Description =========== Multiple vulnerabilities have been discovered in Tor. Please review the CVE identifiers referenced below for details. Workaround ========== There is no known workaround at this time. Resolution ========== All Tor users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.3.25" References ========== [ 1 ] CVE-2012-3517 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3517 [ 2 ] CVE-2012-3518 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3518 [ 3 ] CVE-2012-3519 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3519 [ 4 ] CVE-2012-4419 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4419 [ 5 ] CVE-2012-4922 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4922 [ 6 ] CVE-2012-5573 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5573 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201301-03.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2013 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

input validation

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Reported by the vendor

SOURCES

LAST UPDATE DATE

2024-11-23T21:46:10.174000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE