CVE-2024-20304

Cisco IOS XR Software Packet Memory Exhaustion Vulnerability

Published Sep 11, 2024 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco IOS XR Software

unknown

Version	Status	Constraints
`7.8.1`	affected	—
`7.8.12`	affected	—
`7.7.1`	affected	—
`7.7.2`	affected	—
`7.9.1`	affected	—
`7.10.1`	affected	—
`7.8.2`	affected	—
`7.8.22`	affected	—
`7.7.21`	affected	—
`7.9.2`	affected	—
`7.11.1`	affected	—
`7.9.21`	affected	—
`7.10.2`	affected	—
`24.1.1`	affected	—
`7.11.2`	affected	—
`24.2.1`	affected	—
`24.1.2`	affected	—
`24.2.11`	affected	—

Configuration 1 [-]

OR	cpe:2.3:o:cisco:ios_xr:7.7.1:::::::*
	cpe:2.3:o:cisco:ios_xr:7.7.2:::::::*
	cpe:2.3:o:cisco:ios_xr:7.7.21:::::::*
	cpe:2.3:o:cisco:ios_xr:7.8.1:::::::*
	cpe:2.3:o:cisco:ios_xr:7.8.2:::::::*
	cpe:2.3:o:cisco:ios_xr:7.8.12:::::::*
	cpe:2.3:o:cisco:ios_xr:7.8.22:::::::*
	cpe:2.3:o:cisco:ios_xr:7.9.1:::::::*
	cpe:2.3:o:cisco:ios_xr:7.9.2:::::::*
	cpe:2.3:o:cisco:ios_xr:7.9.21:::::::*
	cpe:2.3:o:cisco:ios_xr:7.10.1:::::::*
	cpe:2.3:o:cisco:ios_xr:7.10.2:::::::*
	cpe:2.3:o:cisco:ios_xr:7.11.1:::::::*
	cpe:2.3:o:cisco:ios_xr:7.11.2:::::::*
	cpe:2.3:o:cisco:ios_xr:24.1.1:::::::*
	cpe:2.3:o:cisco:ios_xr:24.1.2:::::::*
	cpe:2.3:o:cisco:ios_xr:24.2.1:::::::*
	cpe:2.3:o:cisco:ios_xr:24.2.11:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2024-18019	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.596% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

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

History

Oct 3, 2024 2:45 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:o:cisco:ios_xr:24.1.1:::::::* cpe:2.3:o:cisco:ios_xr:24.1.2:::::::* cpe:2.3:o:cisco:ios_xr:24.2.11:::::::* cpe:2.3:o:cisco:ios_xr:24.2.1:::::::* cpe:2.3:o:cisco:ios_xr:7.10.1:::::::* cpe:2.3:o:cisco:ios_xr:7.10.2:::::::* cpe:2.3:o:cisco:ios_xr:7.11.1:::::::* cpe:2.3:o:cisco:ios_xr:7.11.2:::::::* cpe:2.3:o:cisco:ios_xr:7.7.1:::::::* cpe:2.3:o:cisco:ios_xr:7.7.21:::::::* cpe:2.3:o:cisco:ios_xr:7.7.2:::::::* cpe:2.3:o:cisco:ios_xr:7.8.12:::::::* cpe:2.3:o:cisco:ios_xr:7.8.1:::::::* cpe:2.3:o:cisco:ios_xr:7.8.22:::::::* cpe:2.3:o:cisco:ios_xr:7.8.2:::::::* cpe:2.3:o:cisco:ios_xr:7.9.1:::::::* cpe:2.3:o:cisco:ios_xr:7.9.21:::::::* cpe:2.3:o:cisco:ios_xr:7.9.2:::::::*

Sep 11, 2024 8:30 PM First appearance in the feed. Affected versions updated. Affected vendors updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco ios Xr
CPEs		cpe:2.3:o:cisco:ios_xr::::::::
Vendors & Products		Cisco Cisco ios Xr
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 11, 2024 5:00 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Cisco IOS XR Software Packet Memory Exhaustion Vulnerability
Weaknesses		CWE-401
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pak-mem-exhst-3ke9FeFy
Metrics		cvssV3_1 `{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}`