76725 : Openswan Uuse-after-free Crypto Helper Handler ISAKMP Phase 1 Authentication Parsing Remote DoS
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Timeline

Disclosure Date
2011-10-28

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-4073" target="_blank">CVE</a>)</em> : Use-after-free vulnerability in the cryptographic helper handler functionality in Openswan 2.3.0 through 2.6.36 allows remote authenticated users to cause a denial of service (pluto IKE daemon crash) via vectors related to the (1) quick_outI1_continue and (2) quick_outI1 functions.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS, Upgrade
Exploit: Exploit Private
Disclosure: Vendor Verified, Coordinated Disclosure

Solution

Upgrade to version 2.6.37 or higher, as it has been reported to fix this vulnerability. In addition, the vendor has released a patch for some older versions.

Products

Unknown or Incomplete

References

Security Tracker: 1026268
CVE ID: 2011-4073 (see also: NVD)
Secunia Advisory ID: 46678 46681 47165 47239 47342 48413
Bugtraq ID: 50440
Vendor Specific News/Changelog Entry: http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070704.html
http://www.gentoo.org/security/en/glsa/glsa-201203-13.xml
http://www.us.debian.org/security/2011/dsa-2374
https://hermes.opensuse.org/messages/12875536
https://hermes.opensuse.org/messages/12875537
Other Advisory URL: http://www.openswan.org/download/CVE-2011-4073/
RedHat RHSA: RHSA-2011:1422

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 4.0
Source: nvd.nist.gov | Generated: 2011-11-18 | Disagree? | There are 1 more: View All

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