GLSA 201101-02: Tor: Remote heap-based buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	Tor: Remote heap-based buffer overflow
Date:	01/15/2011
Bugs:	#349312
ID:	201101-02

Synopsis

Tor is vulnerable to a heap-based buffer overflow that may allow arbitrary code execution.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/tor	< 0.2.1.28	>= 0.2.1.28	All supported architectures

Description

Tor contains a heap-based buffer overflow in the processing of user or attacker supplied data. No additional information is available.

Impact

Successful exploitation of this vulnerability may allow an unauthenticated remote attacker to execute arbitrary code with the permissions of the Tor user, or to cause a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All Tor users should upgrade to the latest stable version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.1.28"

References

CVE-2010-1676

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201101-02.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.