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CVE-2019-16027

MEDIUMCVSS 6.5/10EPSS 1.51%

Last modified

CVE-2019-16027 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. EPSS estimates a 1.51% chance of exploitation in the next 30 days.

Description

A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
1.51%

71.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xr4.3.2
CiscoIos Xr5.2.5
CiscoIos Xr6.2.2
CiscoIos Xr6.2.3
CiscoIos Xr6.2.25
CiscoIos Xr6.3.3
CiscoIos Xr6.4.2
CiscoIos Xr6.1.3
CiscoIos Xr6.1.4
CiscoIos Xr6.5.2
CiscoIos Xr6.5.3
CiscoIos Xr6.3.15
CiscoIos Xr6.6.1
CiscoIos Xr6.6.25
CiscoIos Xr6.6.2
CiscoIos Xr6.1.2
CiscoIos Xr6.3.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-16027?
A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process.
How severe is CVE-2019-16027?
CVE-2019-16027 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.
How do I fix CVE-2019-16027?
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-2019-16027?

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

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Source: NVD / NIST