CVE-2023-20135

Summary

CVE-2023-20135 is a vulnerability impacting Cisco IOS XR Software image verification checks. An authenticated, local attacker can exploit this TOCTOU (Time-of-Check, Time-of-Use) race condition during install operations using ISO images. By modifying an ISO image and conducting parallel install requests, an attacker may execute arbitrary code on the underlying operating system, resulting in potential security compromises on affected devices.

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