A vulnerability in the classic access control list (ACL) compression feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass the protection that is offered by a configured ACL on an affected device.
This vulnerability is due to incorrect destination address range encoding in the compression module of an ACL that is applied to an interface of an affected device. An attacker could exploit this vulnerability by sending traffic through the affected device that should be denied by the configured ACL. A successful exploit could allow the attacker to bypass configured ACL protections on the affected device, allowing the attacker to access trusted networks that the device might be protecting.
There are workarounds that address this vulnerability.
This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication .
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-comp3acl-vGmp6BQ3 | Exploit Vendor Advisory |
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-comp3acl-vGmp6BQ3 | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 07:40
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-comp3acl-vGmp6BQ3 - Exploit, Vendor Advisory | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.8 |
25 Jan 2024, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2023-09-13 17:15
Updated : 2024-11-21 07:40
NVD link : CVE-2023-20190
Mitre link : CVE-2023-20190
CVE.ORG link : CVE-2023-20190
JSON object : View
Products Affected
cisco
- ios_xr