Vulnerability identifier: #VU33665

Vulnerability risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2052

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libreswan
Universal components / Libraries / Libraries used by multiple products

Vendor: libreswan.org

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
Install update from vendor's website.

Vulnerable software versions

libreswan: 3.0 - 3.1

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External links
http://libreswan.org/security/CVE-2013-2052/CVE-2013-2052.txt
http://lists.libreswan.org/pipermail/swan-announce/2013/000003.html

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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