Vulnerability identifier: #VU44203

Vulnerability risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2012-1663

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: GnuTLS

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Double free vulnerability in libgnutls in GnuTLS before 3.0.14 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted certificate list.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GnuTLS: 1.0.16 - 3.0.12

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External links
http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5866
http://www.exploit-db.com/exploits/24865
http://exchange.xforce.ibmcloud.com/vulnerabilities/74099

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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. However, proof of concept for this vulnerability is available.