#VU30593 Use-after-free in GnuPG - CVE-2015-1606

Vulnerability identifier: #VU30593

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-1606

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GnuPG
Client/Desktop applications / Encryption software

Vendor: GNU

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted keyring file. A remote attackers can cause a denial of service (invalid read and use-after-free).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Update to version 2.1.2.

Vulnerable software versions

GnuPG: 2.1.0 - 2.1.1

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External links
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=f0f71a721ccd7ab9e40b8b6b028b59632c0cc648
https://www.debian.org/security/2015/dsa-3184
https://www.openwall.com/lists/oss-security/2015/02/13/14
https://www.openwall.com/lists/oss-security/2015/02/14/6
https://www.securitytracker.com/id/1031876
https://blog.fuzzing-project.org/5-Multiple-issues-in-GnuPG-found-through-keyring-fuzzing-TFPA-0012015.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.