Improper access control in Cisco IOS XR Software

Published: 2024-03-14

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2024-20322
CWE-ID	CWE-284
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Cisco IOS XR Operating systems & Components / Operating system IOS XR White box Operating systems & Components / Operating system package or component Cisco NCS 4001 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 4009 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 4016 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-12Z20G-SYS-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-12Z20G-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-24Q8L2DD-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-24Z8Q2C-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-28Z4C-SYS-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-28Z4C-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-6Z14S-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-6Z18G-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-ACC-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-FH-AGG Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540-FH-CSR-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-12Z16G-SYS-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-12Z16G-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-16Z4G8Q2C-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-16Z4G8Q2C-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-16Z8Q2C-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-4Z14G2Q-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-4Z14G2Q-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-6Z18G-SYS-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-6Z18G-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-8Z16G-SYS-A Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-8Z16G-SYS-D Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 540X-ACC-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 560-4-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 560-4-SYS-E Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 560-4-SYS-E-CC Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 560-7-SYS Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco NCS 560-7-SYS-E Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 4000 Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 500 Series Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 540 Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 540 Series Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5500 Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5501 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5501-SE Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5502 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5502-SE Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5504 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5508 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5516 Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-24H Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-24Q6H-S Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-24Q6H-SS Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-36H Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-36H-SE Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A1-48Q6H Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A2-MOD-HD-S Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A2-MOD-S Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 55A2-MOD-SE-S Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 560 Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 560 Series Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 5700 Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 57B1-5DSE-SYS Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 57B1-6D24-SYS Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System 57C3-MOD Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System NCS-57C1-48Q6-SYS Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Network Convergence System NCS-57D2-18DD-SYS Hardware solutions / Routers & switches, VoIP, GSM, etc
Vendor	Cisco Systems, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper access control

EUVDB-ID: #VU87521

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-20322

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper assignment of lookup keys to internal interface contexts. A remote attacker can access resources behind the affected device that are supposed to be protected by a configured ACL.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XR: 7.10.2 - 7.11.1

IOS XR White box: All versions

Cisco NCS 4001: All versions

Cisco NCS 4009: All versions

Cisco NCS 4016: All versions

Cisco NCS 540-12Z20G-SYS-A Router: All versions

Cisco NCS 540-12Z20G-SYS-D Router: All versions

Cisco NCS 540-24Q8L2DD-SYS Router: All versions

Cisco NCS 540-24Z8Q2C-SYS Router: All versions

Cisco NCS 540-28Z4C-SYS-A Router: All versions

Cisco NCS 540-28Z4C-SYS-D Router: All versions

Cisco NCS 540-6Z14S-SYS-D Router: All versions

Cisco NCS 540-6Z18G-SYS-D Router: All versions

Cisco NCS 540-ACC-SYS Router: All versions

Cisco NCS 540-FH-AGG Router: All versions

Cisco NCS 540-FH-CSR-SYS Router: All versions

Cisco NCS 540X-12Z16G-SYS-A Router: All versions

Cisco NCS 540X-12Z16G-SYS-D Router: All versions

Cisco NCS 540X-16Z4G8Q2C-A Router: All versions

Cisco NCS 540X-16Z4G8Q2C-D Router: All versions

Cisco NCS 540X-16Z8Q2C-D Router: All versions

Cisco NCS 540X-4Z14G2Q-A Router: All versions

Cisco NCS 540X-4Z14G2Q-D Router: All versions

Cisco NCS 540X-6Z18G-SYS-A Router: All versions

Cisco NCS 540X-6Z18G-SYS-D Router: All versions

Cisco NCS 540X-8Z16G-SYS-A Router: All versions

Cisco NCS 540X-8Z16G-SYS-D Router: All versions

Cisco NCS 540X-ACC-SYS Router: All versions

Cisco NCS 560-4-SYS Router: All versions

Cisco NCS 560-4-SYS-E Router: All versions

Cisco NCS 560-4-SYS-E-CC Router: All versions

Cisco NCS 560-7-SYS Router: All versions

Cisco NCS 560-7-SYS-E Router: All versions

Cisco Network Convergence System 4000 Series: All versions

Cisco Network Convergence System 500 Series Routers: All versions

Cisco Network Convergence System 540 Router: All versions

Cisco Network Convergence System 540 Series Routers: All versions

Cisco Network Convergence System 5500 Series: All versions

Cisco Network Convergence System 5501: All versions

Cisco Network Convergence System 5501-SE: All versions

Cisco Network Convergence System 5502: All versions

Cisco Network Convergence System 5502-SE: All versions

Cisco Network Convergence System 5504: All versions

Cisco Network Convergence System 5508: All versions

Cisco Network Convergence System 5516: All versions

Cisco Network Convergence System 55A1-24H: All versions

Cisco Network Convergence System 55A1-24Q6H-S: All versions

Cisco Network Convergence System 55A1-24Q6H-SS: All versions

Cisco Network Convergence System 55A1-36H: All versions

Cisco Network Convergence System 55A1-36H-SE: All versions

Cisco Network Convergence System 55A1-48Q6H: All versions

Cisco Network Convergence System 55A2-MOD-HD-S: All versions

Cisco Network Convergence System 55A2-MOD-S: All versions

Cisco Network Convergence System 55A2-MOD-SE-S: All versions

Cisco Network Convergence System 560 Router: All versions

Cisco Network Convergence System 560 Series Routers: All versions

Cisco Network Convergence System 5700 Series: All versions

Cisco Network Convergence System 57B1-5DSE-SYS: All versions

Cisco Network Convergence System 57B1-6D24-SYS: All versions

Cisco Network Convergence System 57C3-MOD: All versions

Cisco Network Convergence System NCS-57C1-48Q6-SYS: All versions

Cisco Network Convergence System NCS-57D2-18DD-SYS: All versions

External links

http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-acl-bypass-RZU5NL3e

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.