Denial of service in libConfuse

1) Out-of-bounds read

EUVDB-ID: #VU67558

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2022-40320

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a heap-based buffer over-read within the cfg_tilde_expand() function in confuse.c. A remote attacker can perform a denial of service attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libconfuse: 2.0 - 3.3

External links

http://github.com/libconfuse/libconfuse/issues/163
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EDUT2V62V2XF2IT5TJFPB6P3EQ6X5VLL/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FJKHAPJ6AUWVP4HDGKH4M5A2XXWQI73O/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BSAZK4KAWRWNAFUBBXOYU3PVNH3X7226/

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.