Resource management error in Cisco IOS XR - CVE-2021-1288

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Main Vulnerability Database Vulnerabilities #VU50303

Resource management error in Cisco IOS XR - CVE-2021-1288

Published: February 3, 2021


Vulnerability identifier: #VU50303
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-1288
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XR

Detailed vulnerability description

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

The vulnerability exists in the ingress packet processing function of Cisco IOS XR Software when processing Telnet protocol packets. A remote attacker can send specially crafted Telnet packets to the affected system and crash the ENF_BROKER process.


How to mitigate CVE-2021-1288

Install updates from vendor's website.

Sources