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CVE-2024-20319

MEDIUMCVSS 4.3/10EPSS 0.25%

Last modified

CVE-2024-20319 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
4.3/10

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

EPSS Probability
0.25%

16.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xr5.2.0
CiscoIos Xr5.2.1
CiscoIos Xr5.2.2
CiscoIos Xr5.2.3
CiscoIos Xr5.2.4
CiscoIos Xr5.2.5
CiscoIos Xr5.2.47
CiscoIos Xr5.3.0
CiscoIos Xr5.3.1
CiscoIos Xr5.3.2
CiscoIos Xr5.3.3
CiscoIos Xr5.3.4
CiscoIos Xr6.0.0
CiscoIos Xr6.0.1
CiscoIos Xr6.0.2
CiscoIos Xr6.1.1
CiscoIos Xr6.1.2
CiscoIos Xr6.1.3
CiscoIos Xr6.1.4
CiscoIos Xr6.1.12
CiscoIos Xr6.1.22
CiscoIos Xr6.1.32
CiscoIos Xr6.1.36
CiscoIos Xr6.1.42
CiscoIos Xr6.2.1
CiscoIos Xr6.2.2
CiscoIos Xr6.2.3
CiscoIos Xr6.2.11
CiscoIos Xr6.2.25
CiscoIos Xr6.3.2
CiscoIos Xr6.3.3
CiscoIos Xr6.3.15
CiscoIos Xr6.4.1
CiscoIos Xr6.4.2
CiscoIos Xr6.4.3
CiscoIos Xr6.5.1
CiscoIos Xr6.5.2
CiscoIos Xr6.5.3
CiscoIos Xr6.5.25
CiscoIos Xr6.5.26
CiscoIos Xr6.5.28
CiscoIos Xr6.5.29
CiscoIos Xr6.5.32
CiscoIos Xr6.5.33
CiscoIos Xr6.6.2
CiscoIos Xr6.6.3
CiscoIos Xr6.6.4
CiscoIos Xr6.6.25
CiscoIos Xr6.7.1
CiscoIos Xr6.7.2

Showing 50 of 93 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

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.
How severe is CVE-2024-20319?
CVE-2024-20319 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20319?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20319?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST