Denial of service in PPP

1) Buffer overflow

EUVDB-ID: #VU84790

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4603

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the dumpppp() function in pppdump. A remote attacker can pass specially crafted data to the daemon and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PPP: 2.0.4 - 2.4.9

External links

http://vuldb.com/?id.216198
http://github.com/ppp-project/ppp/commit/a75fb7b198eed50d769c80c36629f38346882cbf

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.