Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

BID:50440

Info

Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

Bugtraq ID: 50440
Class: Design Error
CVE: CVE-2011-4073
Remote: Yes
Local: No
Published: Oct 31 2011 12:00AM
Updated: Apr 13 2015 09:50PM
Credit: ETH Zurich
Vulnerable: Redhat Enterprise Linux Workstation Optional 6
Redhat Enterprise Linux Workstation 6
Redhat Enterprise Linux Server Optional 6
Redhat Enterprise Linux Server 6
Redhat Enterprise Linux Desktop Optional 6
Redhat Enterprise Linux Desktop 6
Redhat Enterprise Linux Desktop 5 client
Redhat Enterprise Linux 5 Server
Oracle Enterprise Linux 6
Oracle Enterprise Linux 5
Openswan Openswan 2.6.22
Openswan Openswan 2.6.21
Openswan Openswan 2.6.20
Openswan Openswan 2.6.16
Openswan Openswan 2.4.15
Openswan Openswan 2.4.14
Openswan Openswan 2.4.13
Openswan Openswan 2.4.4
Openswan Openswan 2.4.2
Openswan Openswan 2.4
Openswan Openswan 2.3.1
Openswan Openswan 2.3
Openswan Openswan 2.6.36
Openswan Openswan 2.6.35
Openswan Openswan 2.6.33
Openswan Openswan 2.6.29
Openswan Openswan 2.6.28
Openswan Openswan 2.6.27
Openswan Openswan 2.6.26
Openswan Openswan 2.6.25
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
Gentoo Linux
Debian Linux 6.0 sparc
Debian Linux 6.0 s/390
Debian Linux 6.0 powerpc
Debian Linux 6.0 mips
Debian Linux 6.0 ia-64
Debian Linux 6.0 ia-32
Debian Linux 6.0 arm
Debian Linux 6.0 amd64
Avaya Aura Application Server 5300 SIP Core 2.1
Avaya Aura Application Server 5300 SIP Core 2.0
Not Vulnerable: Openswan Openswan 2.6.37

Discussion

Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

Openswan is prone to a remote denial-of-service vulnerability due to a use-after-free error.

An attacker may exploit this issue to crash the application, resulting in a denial-of-service condition.

Note: This issue occurs only when Openswan is configured with 'nhelpers=0'.

Openswan 2.3.0 to 2.6.36 are vulnerable.

Exploit / POC

Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

An attacker can use readily available network utilities to exploit this issue.

Solution / Fix

Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.


MandrakeSoft Enterprise Server 5 x86_64

MandrakeSoft Enterprise Server 5

References

Openswan Crpyotgraphic Helper Use After Free Remote Denial Of Service Vulnerability

References:

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