What is CVE-2019-1846?

CVE-2019-1846 is a high-severity vulnerability in Cisco Asr 9000v, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2019-05-16.

How severe is CVE-2019-1846?

High severity. CVSS v3 base score is 7.4 out of 10.

Improper input validation in Cisco Asr 9000v

CVE-2019-1846

A vulnerability in the Multiprotocol Label Switching (MPLS) Operations, Administration, and Maintenance (OAM) implementation of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to the incorrect handling of certain MPLS OAM packets. An attacker could exploit this vulnerability by sending malicious MPLS OAM packets to an affected device. A successful exploit could allow the attacker to cause the lspv_server process to crash. The crash could lead to system instability and the inability to process or forward traffic though the device, resulting in a DoS condition that require manual intervention to restore normal operating conditions.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.006 (47.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2019-1846?: CVE-2019-1846 is a high-severity vulnerability in Cisco Asr 9000v, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2019-05-16.
How severe is CVE-2019-1846?: High severity. CVSS v3 base score is 7.4 out of 10.