Tor: Multiple vulnerabilities

1.  Gentoo Linux Security Advisory

Version Information

Related bugreports: #351920, #359789

Synopsis

Multiple vulnerabilities were found in Tor, the most severe of which may allow a remote attacker to execute arbitrary code.

2.  Impact Information

Background

Tor is an implementation of second generation Onion Routing, a connection-oriented anonymizing communication service.

Description

Multiple vulnerabilities have been discovered in Tor. Please review the CVE identifiers referenced below for details.

Impact

A remote unauthenticated attacker may be able to execute arbitrary code with the privileges of the Tor process or create a Denial of Service.

3.  Resolution Information

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-0.2.1.30"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since April 2, 2011. It is likely that your system is already no longer affected by this issue.

4.  References

• CVE-2011-0015
• CVE-2011-0016
• CVE-2011-0427
• CVE-2011-0490
• CVE-2011-0491
• CVE-2011-0492
• CVE-2011-0493
• CVE-2011-1924