Vulnerability identifier: #VU7660

Vulnerability risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5337

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Gnu
Operating systems & Components / Operating system

Vendor: GNU

Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists due to improper processing of malicious OpenPGP certificates by the read_attribute function. A remote attacker can send a specially crafted OpenPGP certificate, trigger heap-based buffer overflow and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 3.3.26 or 3.5.8.

Vulnerable software versions

Gnu: 3.3.0 - 3.5.7

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External links
http://www.gnutls.org/security.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.