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[ GLSA 200905-03 ] IPSec Tools: Denial of Service
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PostPosted: Sun May 24, 2009 2:26 pm    Post subject: [ GLSA 200905-03 ] IPSec Tools: Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: IPSec Tools: Denial of Service (GLSA 200905-03)
Severity: normal
Exploitable: remote
Date: May 24, 2009
Bug(s): #267135
ID: 200905-03

Synopsis

Multiple errors in the IPSec Tools racoon daemon might allow remote attackers to cause a Denial of Service.

Background

The IPSec Tools are a port of KAME's IPsec utilities to the Linux-2.6 IPsec implementation. They include racoon, an Internet Key Exchange daemon for automatically keying IPsec connections.

Affected Packages

Package: net-firewall/ipsec-tools
Vulnerable: < 0.7.2
Unaffected: >= 0.7.2
Architectures: All supported architectures


Description

The following vulnerabilities have been found in the racoon daemon as shipped with IPSec Tools:
  • Neil Kettle reported that racoon/isakmp_frag.c is prone to a null-pointer dereference (CVE-2009-1574).
  • Multiple memory leaks exist in (1) the eay_check_x509sign() function in racoon/crypto_openssl.c and (2) racoon/nattraversal.c (CVE-2009-1632).


Impact

A remote attacker could send specially crafted fragmented ISAKMP packets without a payload or exploit vectors related to X.509 certificate authentication and NAT traversal, possibly resulting in a crash of the racoon daemon.

Workaround

There is no known workaround at this time.

Resolution

All IPSec Tools users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-firewall/ipsec-tools-0.7.2"


References

CVE-2009-1574
CVE-2009-1632
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