Denial of service in PPP

1) Buffer overflow

EUVDB-ID: #VU84790

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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

CPE2.3

• cpe:2.3:a:paul_mackerras:ppp:2.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:paul_mackerras:ppp:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:paul_mackerras:ppp:2.1.2:*:*:*:*:*:*:*

External links

https://vuldb.com/?id.216198
https://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.