GLSA 200407-17: l2tpd: Buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	l2tpd: Buffer overflow
Date:	07/22/2004
Bugs:	#53009
ID:	200407-17

Synopsis

A buffer overflow in l2tpd could lead to remote code execution. It is not known whether this bug is exploitable.

Background

l2tpd is a GPL implentation of the Layer 2 Tunneling Protocol.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-dialup/l2tpd	< 0.69-r2	>= 0.69-r2	All supported architectures

Description

Thomas Walpuski discovered a buffer overflow that may be exploitable by sending a specially crafted packet. In order to exploit the vulnerable code, an attacker would need to fake the establishment of an L2TP tunnel.

Impact

A remote attacker may be able to execute arbitrary code with the privileges of the user running l2tpd.

Workaround

There is no known workaround for this vulnerability.

Resolution

All users are recommended to upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-l2tpd-0.69-r2"
    # emerge ">=net-l2tpd-0.69-r2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200407-17.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.