Reachable Assertion in Cisco IOS XR - CVE-2021-1440

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Main Vulnerability Database Vulnerabilities #VU56426

Reachable Assertion in Cisco IOS XR - CVE-2021-1440

Published: September 9, 2021


Vulnerability identifier: #VU56426
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-1440
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XR
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion in the implementation of the Resource Public Key Infrastructure (RPKI) feature. A remote attacker can send a specially crafted RTR packet and cause a denial of service condition on the target system.


Remediation

Install updates from vendor's website.

External links