#VU80775 Time-of-check Time-of-use (TOCTOU) Race Condition in Cisco Systems, Inc products - CVE-2023-20135

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Main Vulnerability Database Vulnerabilities #VU80775

#VU80775 Time-of-check Time-of-use (TOCTOU) Race Condition in Cisco Systems, Inc products - CVE-2023-20135

Published: September 14, 2023


Vulnerability identifier: #VU80775
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-20135
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XR
Cisco 8000 Series Routers
Cisco Network Convergence System 540 Series Routers
Network Convergence System 5700 Series
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a local user to execute arbitrary code on the system.

The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses an ISO image. A local administrator can execute arbitrary code on target system.


Remediation

Install updates from vendor's website.

External links