#VU101031 Input validation error in frr - CVE-2024-27913

Vulnerability identifier: #VU101031

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-27913

CWE-ID: CWE-20

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 perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of OSPF LSA packets within the ospf_te_parse_te() function in ospfd/ospf_te.c. A remote attacker can send specially crafted packets to the server and crash the ospfd daemon.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

frr: 9.0 - 9.1

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External links
https://github.com/FRRouting/frr/pull/15431

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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 Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.