CVE-2024-2900: Tenda AC7 saveParentControlInfo stack-based overflow

Vulnerability summary

CVE-2024-2900 is a high (CVSS 9.0) Stack-based Buffer Overflow vulnerability in tenda ac7_firmware. EPSS estimates a 1.68% chance of exploitation in the next 30 days, higher than 76.7% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 26-03-2024
   PublishedVulnerability first disclosed.
2. 01-08-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability, which was classified as critical, was found in Tenda AC7 15.03.06.44. This affects the function saveParentControlInfo of the file /goform/saveParentControlInfo. The manipulation of the argument deviceId/time/urls leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-257943. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

• 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).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.