Denial of service in FRRouting



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-3748
CWE-ID CWE-835
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) Infinite loop

EUVDB-ID: #VU78619

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-2023-3748

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop when processing hello messages. A remote attacker can send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

frr: before 8.5

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=2223668
https://access.redhat.com/security/cve/CVE-2023-3748


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.



###SIDEBAR###