Remote code execution in PPP daemon



Published: 2020-02-04
Severity High
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2020-8597
CWE ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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PPP
Server applications / Other server solutions

Vendor Paul Mackerras

Security Advisory

This security advisory describes one high risk vulnerability.

1) Buffer overflow

Severity: High

CVSSv3: 9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2020-8597

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

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

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

Vulnerable software versions

PPP: 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8

CPE External links

https://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.