On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, OS command injection is possible as a result of incorrect processing of the res_buf parameter to index.cgi.
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.
Link | Tags |
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https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html | third party advisory |
https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/ | third party advisory |
https://securelist.com/backdoors-in-d-links-backyard/85530/ | third party advisory exploit |
http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/ | third party advisory |