Input validation error in Openswan

1) Input validation error

EUVDB-ID: #VU32677

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2053

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (pluto IKE daemon crash) and possibly execute arbitrary code via crafted DNS TXT records.

Mitigation

Update to version 2.6.39.

Vulnerable software versions

Openswan: 2.6.01 - 2.6.38

External links

http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00008.html
http://rhn.redhat.com/errata/RHSA-2013-0827.html
http://www.debian.org/security/2014/dsa-2893
http://www.securityfocus.com/bid/59838
http://bugzilla.redhat.com/show_bug.cgi?id=960229
http://lists.libreswan.org/pipermail/swan-announce/2013/000003.html
http://www.openswan.org/news/13

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.