CVE-2021-35004: tp-link tl-wa1201_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2021-35004 is a high (CVSS 10.0) Stack-based Buffer Overflow vulnerability in tp-link tl-wa1201_firmware. EPSS estimates a 7.74% chance of exploitation in the next 30 days, higher than 94.6% of scored vulnerabilities.

Timeline

1. 21-01-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link TL-WA1201 1.0.1 Build 20200709 rel.66244(5553) wireless access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. A crafted DNS message can trigger an overflow of a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14656.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).