What is CVE-2020-3190?

CVE-2020-3190 is a medium-severity vulnerability in Cisco iOS Xr Software, classified under Uncontrolled Resource Consumption. CVSS score: 5.8/10. Published 2020-03-04.

How severe is CVE-2020-3190?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Resource exhaustion in Cisco iOS Xr Software

CVE-2020-3190

A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device. The vulnerability is due to improper handling of packets by the IPsec packet processor. An attacker could exploit this vulnerability by sending malicious ICMP error messages to an affected device that get punted to the IPsec packet processor. A successful exploit could allow the attacker to deplete IPsec memory, resulting in all future IPsec packets to an affected device being dropped by the device. Manual intervention is required to recover from this situation.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.013 (67.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Cisco Ios Xr Software — versions unspecified
Cisco Ios_xr

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3190?: CVE-2020-3190 is a medium-severity vulnerability in Cisco iOS Xr Software, classified under Uncontrolled Resource Consumption. CVSS score: 5.8/10. Published 2020-03-04.
How severe is CVE-2020-3190?: Medium severity. CVSS v3 base score is 5.8 out of 10.