Detections
Analytics
Cisco IOS XR Software MPLS Pseudowire Interfaces Access Control List Bypass (CSCwf99658)
medium Nessus Plugin ID 206038
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco IOS XR is affected by a vulnerability.- A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL. (CVE-2024-20315)
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwf99658See Also
http://www.nessus.org/u?c7ec5d32
Plugin Details
Severity: Medium
ID: 206038
File Name: cisco-sa-iosxr-acl-bypass-RZU5NL3e-iosxr-CSCwf99658.nasl
Version: 1.1
Type: combined
Family: CISCO
Published: 8/21/2024
Updated: 8/21/2024
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2024-20315
CVSS v3
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 5.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xr
Required KB Items: Host/Cisco/IOS-XR/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 3/13/2024
Vulnerability Publication Date: 3/13/2024
Reference Information
CVE: CVE-2024-20315