#VU56092 Buffer overflow in FreeBSD - CVE-2021-29630

Vulnerability identifier: #VU56092

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-29630

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

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

The vulnerability exists due to a boundary error in ggatec(8) daemon. A remote attacker on the local network can pass specially crafted content to the affected daemon, 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 updates from vendor's website.

Vulnerable software versions

FreeBSD: 11.0 - 13.0

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External links
https://www.freebsd.org/security/advisories/FreeBSD-SA-21:14.ggatec.asc

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Q & A

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.