Vulnerability identifier: #VU7661

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7869

CWE-ID: CWE-119

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 memory processing in the opencdk/read-packet.c of the cdk_pkt_read function. A remote attacker can send a specially crafted OpenPGP certificate, trigger buffer overflow, integer overflow or NULL pointer dereference and cause the server application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 3.5.10 or later.

Vulnerable software versions

Gnu: 3.5.0 - 3.5.8

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External links
http://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.