Vulnerability · Published May 17, 2021 · Assigned by mitre
CVE-2021-27342
Medium 5.9
In plain English
A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.6% (higher than 92% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)4.6%top 8.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
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
Affected products (as reported)
References
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 x_refsource_CONFIRM
- https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py x_refsource_MISC
- https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html x_refsource_MISC