Vulnerability identifier: #VU7655
Vulnerability risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
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 bypass security restrictions on the target system.
The weakness exists due to insufficient validation of the serial length of an OCSP response by the gnutls_ocsp_resp_check_crt function in the lib/x509/ocsp.c code. A remote attacker can bypass certificate validation and conduct further attacks.
Mitigation
Update to version 3.4.15 or 3.5.4.
Vulnerable software versions
Gnu: 3.3.24 - 3.5.3
External links
http://www.gnutls.org/security.html
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.