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CVE-2024-20267

HIGH
Published 2024-02-28T16:15:18.044Z
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Expert Analysis

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CVSS Score

V3.1
8.6
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.606
Higher than 60.6% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload.

This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that is encapsulated within an MPLS frame to an MPLS-enabled interface of the targeted device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition.

Note: The IPv6 packet can be generated multiple hops away from the targeted device and then encapsulated within MPLS. The DoS condition may occur when the NX-OS device processes the packet.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco NX-OS Software

Affected Versions:

6.0(2)A3(1) 6.0(2)A3(2) 6.0(2)A3(4) 6.0(2)A4(1) 6.0(2)A4(2) 6.0(2)A4(3) 6.0(2)A4(4) 6.0(2)A4(5) 6.0(2)A4(6) 6.0(2)A6(1) 6.0(2)A6(1a) 6.0(2)A6(2) 6.0(2)A6(2a) 6.0(2)A6(3) 6.0(2)A6(3a) 6.0(2)A6(4) 6.0(2)A6(4a) 6.0(2)A6(5) 6.0(2)A6(5a) 6.0(2)A6(5b) 6.0(2)A6(6) 6.0(2)A6(7) 6.0(2)A6(8) 6.0(2)A7(1) 6.0(2)A7(1a) 6.0(2)A7(2) 6.0(2)A7(2a) 6.0(2)A8(1) 6.0(2)A8(2) 6.0(2)A8(3) 6.0(2)A8(4) 6.0(2)A8(4a) 6.0(2)A8(5) 6.0(2)A8(6) 6.0(2)A8(7) 6.0(2)A8(7a) 6.0(2)A8(7b) 6.0(2)A8(8) 6.0(2)A8(9) 6.0(2)A8(10a) 6.0(2)A8(10) 6.0(2)A8(11) 6.0(2)A8(11a) 6.0(2)A8(11b) 6.0(2)U2(1) 6.0(2)U2(2) 6.0(2)U2(3) 6.0(2)U2(4) 6.0(2)U2(5) 6.0(2)U2(6) 6.0(2)U3(1) 6.0(2)U3(2) 6.0(2)U3(3) 6.0(2)U3(4) 6.0(2)U3(5) 6.0(2)U3(6) 6.0(2)U3(7) 6.0(2)U3(8) 6.0(2)U3(9) 6.0(2)U4(1) 6.0(2)U4(2) 6.0(2)U4(3) 6.0(2)U4(4) 6.0(2)U5(1) 6.0(2)U5(2) 6.0(2)U5(3) 6.0(2)U5(4) 6.0(2)U6(1) 6.0(2)U6(2) 6.0(2)U6(3) 6.0(2)U6(4) 6.0(2)U6(5) 6.0(2)U6(6) 6.0(2)U6(7) 6.0(2)U6(8) 6.0(2)U6(1a) 6.0(2)U6(2a) 6.0(2)U6(3a) 6.0(2)U6(4a) 6.0(2)U6(5a) 6.0(2)U6(5b) 6.0(2)U6(5c) 6.0(2)U6(9) 6.0(2)U6(10) 6.2(2) 6.2(2a) 6.2(6) 6.2(6b) 6.2(8) 6.2(8a) 6.2(8b) 6.2(10) 6.2(12) 6.2(18) 6.2(16) 6.2(14) 6.2(6a) 6.2(20) 6.2(20a) 6.2(22) 6.2(24) 6.2(24a) 7.0(3)F1(1) 7.0(3)F2(1) 7.0(3)F2(2) 7.0(3)F3(1) 7.0(3)F3(2) 7.0(3)F3(3) 7.0(3)F3(3a) 7.0(3)F3(4) 7.0(3)F3(3c) 7.0(3)F3(5) 7.0(3)I2(2a) 7.0(3)I2(2b) 7.0(3)I2(2c) 7.0(3)I2(2d) 7.0(3)I2(2e) 7.0(3)I2(3) 7.0(3)I2(4) 7.0(3)I2(5) 7.0(3)I2(1) 7.0(3)I2(1a) 7.0(3)I2(2) 7.0(3)I3(1) 7.0(3)I4(1) 7.0(3)I4(2) 7.0(3)I4(3) 7.0(3)I4(4) 7.0(3)I4(5) 7.0(3)I4(6) 7.0(3)I4(7) 7.0(3)I4(8) 7.0(3)I4(8a) 7.0(3)I4(8b) 7.0(3)I4(8z) 7.0(3)I4(9) 7.0(3)I5(1) 7.0(3)I5(2) 7.0(3)I6(1) 7.0(3)I6(2) 7.0(3)I7(1) 7.0(3)I7(2) 7.0(3)I7(3) 7.0(3)I7(4) 7.0(3)I7(5) 7.0(3)I7(5a) 7.0(3)I7(6) 7.0(3)I7(7) 7.0(3)I7(8) 7.0(3)I7(9) 7.0(3)I7(10) 7.1(0)N1(1a) 7.1(0)N1(1b) 7.1(0)N1(1) 7.1(1)N1(1) 7.1(2)N1(1) 7.1(3)N1(1) 7.1(3)N1(2) 7.1(4)N1(1) 7.1(5)N1(1) 7.1(5)N1(1b) 7.2(0)D1(1) 7.2(1)D1(1) 7.2(2)D1(2) 7.2(2)D1(1) 7.3(0)D1(1) 7.3(0)DX(1) 7.3(0)N1(1) 9.2(1) 9.2(2) 9.2(2t) 9.2(3) 9.2(4) 9.2(2v) 9.3(1) 9.3(2) 9.3(3) 9.3(4) 9.3(5) 9.3(6) 9.3(7) 9.3(7a) 9.3(8) 9.3(9) 9.3(10) 9.3(11) 9.3(12) 10.1(1) 10.1(2) 10.1(2t) 10.2(1) 10.2(1q) 10.2(2) 10.2(3) 10.2(3t) 10.2(4) 10.2(5) 10.2(3v) 10.2(6) 10.3(1) 10.3(2) 10.3(3) 10.3(99w) 10.3(99x) 10.4(1)

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-r2c7-g2vh-f84m

Advisory Details

A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that is encapsulated within an MPLS frame to an MPLS-enabled interface of the targeted device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition. Note: The IPv6 packet can be generated multiple hops away from the targeted device and then encapsulated within MPLS. The DoS condition may occur when the NX-OS device processes the packet.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-20267
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-mpls-dos-R9ycXkwM

Advisory provided by GitHub Security Advisory Database. Published: February 29, 2024, Modified: February 29, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-mpls-dos-R9ycXkwM
Published: 2024-02-28T16:15:18.044Z
Last Modified: 2024-08-28T14:13:57.631Z
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