CVE-2023-20135 (ios_xr) | allinfosecnews.com

Sept. 13, 2023, 5:15 p.m. |

National Vulnerability Database web.nvd.nist.gov

A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system.

This vulnerability is 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. An attacker could exploit this vulnerability by modifying an ISO image and then carrying out install requests in parallel. A successful exploit could allow the …

arbitrary code attacker check cisco cisco ios cisco ios xr code cve image install ios iso local operating system query race race condition software system toctou verification vulnerability

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