Vulnerability identifier: #VU82898

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-38407

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
frr
Other software / Other software solutions

Vendor:

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition during labeled unicast parsing in bgpd/bgp_label.c. A remote attacker can send specially crafted input to the application, trigger an out-of-bounds read error and crash the daemon.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://github.com/FRRouting/frr/pull/12956
http://github.com/FRRouting/frr/compare/frr-8.5-rc...frr-8.5
http://github.com/FRRouting/frr/pull/12951

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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.