Cisco IOS XR Software Management Interface ACL Bypass Vulnerability

5.3 CVSS

Vulnerability Description

A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O infrastructure platforms for Linux-handled features such as SSH, NetConf, or gRPC. An attacker could exploit this vulnerability by attempting to send traffic to an affected device. A successful exploit could allow the attacker to bypass an ingress ACL that is applied on the management interface of the affected device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-acl-packetio-Swjhhbtz

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Affected Vendor

Cisco

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Affected Software

Cisco IOS XR Software

Vulnerable Versions:

6.6.1, 6.5.3, 7.0.1, 6.6.11, 6.5.1, 6.5.2, 6.6.2, 6.6.12, 6.6.25, 7.1.1, 7.0.90, 6.6.3, 7.0.2, 7.1.2, 7.2.1, 7.0.11, 7.0.12, 7.0.14, 6.6.4, 7.2.12, 7.3.1, 7.4.1, 7.2.2, 7.3.15, 7.3.16, 7.4.15, 7.3.2, 7.5.1, 7.4.16, 7.3.27, 7.6.1, 7.5.2, 7.8.1, 7.6.15, 7.5.12, 7.8.12, 7.3.4, 7.3.3, 7.4.2, 7.7.1, 7.6.2, 7.5.3, 7.7.2, 7.9.1, 7.10.1, 7.8.2, 7.5.4, 7.8.22, 7.7.21, 7.9.2, 7.3.5, 7.5.5, 7.11.1, 7.10.2, 24.1.1, 7.3.6, 7.5.52, 7.11.2, 24.2.1, 24.1.2, 24.2.11, 24.3.1, 24.4.1, 24.2.2, 7.11.21, 24.2.20, 24.3.2, 25.1.1, 24.4.2, 24.3.20, 25.1.2, 24.3.30, 24.4.30, 24.2.21