An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
| Link | Tags |
|---|---|
| https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 | vendor advisory |
| https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py | third party advisory exploit |
| https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html | third party advisory exploit |