Denial of service in tcpdump

1) Infinite loop

EUVDB-ID: #VU89150

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-2397

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop in PPP printer when handling the DLT_PPP_SERIAL .pcap savefile. A remote attacker can trick  the victim into opening a specially crafted file and cause denial of service conditions.

Mitigation

Note, the vulnerability does not affect any tcpdump release, but it affected the git master branch from 2023-06-05 to 2024-03-21.

Vulnerable software versions

Tcpdump: master

External links

http://github.com/the-tcpdump-group/tcpdump/commit/b9811ef5bb1b7d45a90e042f81f3aaf233c8bcb2

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.