CVE-2020-10886: tp-link ac1750_firmware OS Command Injection

Vulnerability summary

CVE-2020-10886 is a critical (CVSS 9.8) OS Command Injection vulnerability in tp-link ac1750_firmware. EPSS estimates a 4.95% chance of exploitation in the next 30 days, higher than 92.1% 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 tmpServer service, which listens on TCP port 20002. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-9662.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.