Vulnerability identifier: #VU62920
Vulnerability risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
NetBSD
Operating systems & Components /
Operating system
Vendor: NetBSD Foundation, Inc
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PPPoE client when handling responses to broadcasts discovery packets. A remote attacker who controls server on the same network can send a specially crafted response to the affected PPPoE client, trigger memory corruption and execute arbitrary code on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
NetBSD: 8.2 - 9.2
External links
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2022-001.txt.asc
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.