Denial of service in Frrouting



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-36440
CWE-ID CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
 frr
Other software / Other software solutions

Vendor frrouting.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Reachable Assertion

EUVDB-ID: #VU79710

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-36440

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion within the peek_for_as4_capability() function. A remote attacker can send specially crafted traffic to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

frr: 8.0 - 8.3.1

CPE2.3 External links

https://github.com/spwpun/pocs/blob/main/frr-bgpd.md
https://github.com/spwpun/pocs
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GM66PNHGCXZU66LQCTP2FSJLFF6CVMSI/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3HU4PKLUVB5CTMOVQ2GV33TNUNMJCBGD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BBXEXL2ZQBWCBLNUP6P67FHECXQWSK3L/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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