#VU81446 Out-of-bounds read in frr - CVE-2023-41360

Vulnerability identifier: #VU81446

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-41360

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
frr
Other software / Other software solutions

Vendor: frrouting.org

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in bgpd/bgp_packet.c. A remote attacker can read the initial byte of the ORF header in an ahead-of-stream situation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

frr: 8.0 - 9.0

---

External links
https://github.com/FRRouting/frr/pull/14245
https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html

---

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.