1) Buffer overflow

EUVDB-ID: #VU24916

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-8597

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the "eap_request" and "eap_response" functions in "eap.c" file in pppd. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PPP: 2.4.2 - 2.4.8

---

CPE2.3

• cpe:2.3:a:paul_mackerras:point-to-point protocol:2.4.8:*:*:*:*:*:*:*
• Full software list in CPE2.3 format available after registration.

External links

http://github.com/paulusmack/ppp/commit/8d7970b8f3db727fe798b65f3377fe6787575426

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. However, proof of concept for this vulnerability is available.