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CVE-2023-20190

MEDIUM
Published 2023-09-13T16:43:32.847Z
Actions:

CVSS Score

V3.1
5.8
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.003
probability
of exploitation in the wild

There is a 0.3% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.644
Higher than 64.4% 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
LOW
Availability
NONE

Description

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 .

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco IOS XR Software

Affected Versions:

5.2.0 5.2.1 5.2.2 5.2.4 5.2.3 5.2.5 5.2.47 5.3.0 5.3.1 5.3.2 5.3.3 5.3.4 6.0.0 6.0.1 6.0.2 6.1.1 6.1.2 6.1.3 6.1.4 6.1.12 6.1.22 6.1.32 6.1.36 6.1.42 6.2.1 6.2.2 6.2.3 6.2.25 6.2.11 6.3.2 6.3.3 6.3.15 6.4.1 6.4.2 6.4.3 6.5.1 6.5.2 6.5.3 6.5.25 6.5.26 6.5.28 6.5.29 6.5.32 6.5.33 6.6.2 6.6.3 6.6.25 6.6.4 7.0.1 7.0.2 7.0.12 7.0.14 7.1.1 7.1.15 7.1.2 7.1.3 6.7.1 6.7.2 6.7.3 6.7.4 7.2.0 7.2.1 7.2.2 7.3.1 7.3.15 7.3.2 7.3.3 7.4.1 7.4.2 6.8.1 6.8.2 7.5.1 7.5.3 7.5.2 7.6.1 7.6.2 7.7.1 7.7.2 6.9.1 6.9.2 7.8.1

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-comp3acl-vGmp6BQ3
Published: 2023-09-13T16:43:32.847Z
Last Modified: 2024-08-02T09:05:35.387Z
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