Denial of service in GnuTLS

1) Denial of service

EUVDB-ID: #VU7661

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 - Memory corruption

Exploit availability: No

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

External links

http://gnutls.org/security.html#

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.