CVE-2024-20319

MEDIUM
Published Mar 13, 2024 Modified Jul 7, 2025 CWE-284

Description

A vulnerability in the UDP forwarding code of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to bypass configured management plane protection policies and access the Simple Network Management Plane (SNMP) server of an affected device. This vulnerability is due to incorrect UDP forwarding programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by attempting to perform an SNMP operation using broadcast as the destination address that could be processed by an affected device that is configured with an SNMP server. A successful exploit could allow the attacker to communicate to the device on the configured SNMP ports. Although an unauthenticated attacker could send UDP datagrams to the configured SNMP port, only an authenticated user can retrieve or modify data using SNMP requests.

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CVSS v3.1 Score

4.3
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-284 CWE-284

Affected Products

Vendor Product
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr

References

Frequently Asked Questions

What is CVE-2024-20319? +
A vulnerability in the UDP forwarding code of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to bypass configured management plane protection policies and access the Simple Network Management Plane (SNMP) server of an affected device. This vulnerability is due to incorrect UDP forwarding programming when using SNMP with management plane protection. An attacker could exploit this vulnerability by attempting to perform an SNMP operation using broadcast as the destination address that could be processed by an affected device that is configured with an SNMP server. A successful exploit could allow the attacker to communicate to the device on the configured SNMP ports. Although an unauthenticated attacker could send UDP datagrams to the configured SNMP port, only an authenticated user can retrieve or modify data using SNMP requests. It has a CVSS v3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2024-20319? +
CVE-2024-20319 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-20319? +
CVE-2024-20319 affects products from cisco, specifically: ios_xr. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20319? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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