Vulnerability identifier: #VU97198

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-2024-20304

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XR
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the multicast traceroute version 2 (Mtrace2) feature. A remote attacker can send specially crafted UDP packets to the affected device and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XR: 24.2.1, 24.1 - 24.1.2, 7.10 - 7.10.2, 7.9 - 7.9.21, 7.8 - 7.8.2, 7.7.0 - 7.7.21

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External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pak-mem-exhst-3ke9FeFy
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCwk63828

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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.