CVE-2024-20304: ios xr — Fix

Description

A vulnerability in the multicast traceroute version 2 (Mtrace2) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust the UDP packet memory of an affected device. This vulnerability exists because the Mtrace2 code does not properly handle packet memory. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to exhaust the incoming UDP packet memory. The affected device would not be able to process higher-level UDP-based protocols packets, possibly causing a denial of service (DoS) condition. Note: This vulnerability can be exploited using IPv4 or IPv6.

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CVSS v3.1 Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All
cisco	ios_xr	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pak-mem-exhst-3ke9FeFy

Frequently Asked Questions

What is CVE-2024-20304? +

A vulnerability in the multicast traceroute version 2 (Mtrace2) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust the UDP packet memory of an affected device. This vulnerability exists because the Mtrace2 code does not properly handle packet memory. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to exhaust the incoming UDP packet memory. The affected device would not be able to process higher-level UDP-based protocols packets, possibly causing a denial of service (DoS) condition. Note: This vulnerability can be exploited using IPv4 or IPv6. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2024-20304? +

CVE-2024-20304 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-20304? +

CVE-2024-20304 affects products from cisco, specifically: ios_xr. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20304? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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