Vulnerability · Published Feb 18, 2022 · Assigned by zdi
CVE-2022-24355
High 8.8
In plain English
A high-severity stack buffer overflow in TL-WR940N from TP-Link. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 81% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N 3.20.1 Build 200316 Rel.34392n (5553) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of file name extensions. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13910.
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.zerodayinitiative.com/advisories/ZDI-22-265/ x_refsource_MISC