CVE-2020-10881: tp-link ac1750_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2020-10881 is a high (CVSS 10.0) Stack-based Buffer Overflow vulnerability in tp-link ac1750_firmware. EPSS estimates a 9.28% chance of exploitation in the next 30 days, higher than 95.3% of scored vulnerabilities.

Timeline

1. 25-03-2020
   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 Archer A7 Firmware Ver: 190726 AC1750 routers. 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 the root user. Was ZDI-CAN-9660.

• 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.