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Vulnerability Details :

CVE-2023-20191

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-13 Sep, 2023 | 16:41
Updated At-02 Aug, 2024 | 09:05
Rejected At-
Credits

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 incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device. 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 .

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:cisco
Assigner Org ID:d1c1063e-7a18-46af-9102-31f8928bc633
Published At:13 Sep, 2023 | 16:41
Updated At:02 Aug, 2024 | 09:05
Rejected At:
▼CVE Numbering Authority (CNA)

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 incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device. 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 .

Affected Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco IOS XR Software
Versions
Affected
  • 6.4.1
  • 6.5.1
  • 6.5.2
  • 6.5.3
  • 6.6.2
  • 6.6.3
  • 6.6.25
  • 6.6.4
  • 7.0.1
  • 7.0.2
  • 7.1.1
  • 7.1.2
  • 7.2.1
  • 7.2.2
  • 7.3.1
  • 7.3.2
  • 7.3.3
  • 7.3.5
  • 7.4.1
  • 7.4.2
  • 7.5.1
  • 7.5.3
  • 7.5.2
  • 7.5.4
  • 7.6.1
  • 7.6.2
  • 7.7.1
  • 7.7.2
  • 7.8.1
  • 7.8.2
  • 7.9.1
Problem Types
TypeCWE IDDescription
cweCWE-284Improper Access Control
Type: cwe
CWE ID: CWE-284
Description: Improper Access Control
Metrics
VersionBase scoreBase severityVector
3.15.8MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Version: 3.1
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF
N/A
Hyperlink: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF
Resource: N/A
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF
x_transferred
Hyperlink: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF
Resource:
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:ykramarz@cisco.com
Published At:13 Sep, 2023 | 17:15
Updated At:25 Jan, 2024 | 17:15

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 incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device. 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 .

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Secondary3.15.8MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CPE Matches
Cisco Systems, Inc.
cisco
>>ios_xr>>Versions before 7.7.21(exclusive)
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>Versions from 7.8(inclusive) to 7.9.2(exclusive)
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>7.10
cpe:2.3:o:cisco:ios_xr:7.10:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-863Primarynvd@nist.gov
CWE-284Secondaryykramarz@cisco.com
CWE ID: CWE-863
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-284
Type: Secondary
Source: ykramarz@cisco.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYFykramarz@cisco.com
Vendor Advisory
Hyperlink: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF
Source: ykramarz@cisco.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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