CVE-2018-17787: d-link dir-823g_firmware OS Command Injection

Vulnerability summary

CVE-2018-17787 is a critical (CVSS 9.8) OS Command Injection vulnerability in d-link dir-823g_firmware. EPSS estimates a 3.66% chance of exploitation in the next 30 days, higher than 89.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-10-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

On D-Link DIR-823G devices, the GoAhead configuration allows /HNAP1 Command Injection via shell metacharacters in the POST data, because this data is sent directly to the "system" library function.

• 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.