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CVE-2024-20373

MEDIUM
Published 2024-11-15T14:52:34.137Z
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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.617
Higher than 61.7% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
LOW
Availability
NONE

Description

A vulnerability in the implementation of the Simple Network Management Protocol (SNMP) IPv4 access control list (ACL) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform SNMP polling of an affected device, even if it is configured to deny SNMP traffic. 

This vulnerability exists because Cisco IOS Software and Cisco IOS XE Software do not support extended IPv4 ACLs for SNMP, but they do allow administrators to configure extended named IPv4 ACLs that are attached to the SNMP server configuration without a warning message. This can result in no ACL being applied to the SNMP listening process. An attacker could exploit this vulnerability by performing SNMP polling of an affected device. A successful exploit could allow the attacker to perform SNMP operations that should be denied. The attacker has no control of the SNMP ACL configuration and would still need a valid SNMP version 2c (SNMPv2c) community string or SNMP version 3 (SNMPv3) user credentials.
SNMP with IPv6 ACL configurations is not affected.
For more information, see the section of this advisory.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco IOS XE Catalyst SD-WAN

Affected Versions:

16.10.6 16.12.3 16.12.1 16.10.4 16.10.5 16.12.4 16.10.3 16.10.3a 16.10.3b 16.11.1s 16.11.1a 16.10.1 16.11.1f 16.9.4 16.9.3 16.10.2 16.11.1b 16.11.1 16.12.5 16.11.1d
cisco

ios_xe_catalyst_sd-wan

Affected Versions:

16.10.1 16.10.2 16.10.3 16.10.3a 16.10.3b 16.10.4 16.10.5 16.10.6 16.11.1 16.11.1a 16.11.1b 16.11.1d 16.11.1f 16.11.1s 16.12.1 16.12.3 16.12.4 16.12.5 16.9.3

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-3xmf-m2fg-h94r

Advisory Details

A vulnerability in the implementation of the Simple Network Management Protocol (SNMP) IPv4 access control list (ACL) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform SNMP polling of an affected device, even if it is configured to deny SNMP traffic.  This vulnerability exists because Cisco IOS Software and Cisco IOS XE Software do not support extended IPv4 ACLs for SNMP, but they do allow administrators to configure extended named IPv4 ACLs that are attached to the SNMP server configuration without a warning message. This can result in no ACL being applied to the SNMP listening process. An attacker could exploit this vulnerability by performing SNMP polling of an affected device. A successful exploit could allow the attacker to perform SNMP operations that should be denied. The attacker has no control of the SNMP ACL configuration and would still need a valid SNMP version 2c (SNMPv2c) community string or SNMP version 3 (SNMPv3) user credentials. SNMP with IPv6 ACL configurations is not affected. For more information, see the section of this advisory.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-20373
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-uwBXfqww

Advisory provided by GitHub Security Advisory Database. Published: November 15, 2024, Modified: November 15, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-uwBXfqww
Published: 2024-11-15T14:52:34.137Z
Last Modified: 2024-11-15T16:20:59.945Z
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