CVE-2021-27342 Security feature bypass in n/a
Remote attackers can bypass telnetd brute-force protection on D-Link DIR-842 routers using a timing side-channel, enabling faster credential guessing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27342?
CVE-2021-27342 is a medium-severity vulnerability in n/a, published on 17 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
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
Weakness: CWE-203
Which versions are affected by CVE-2021-27342?
It affects 1 product.
Products include Dlink Dir-842e Firmware.
How do I fix CVE-2021-27342?
No fix has been published for CVE-2021-27342 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-27342 being exploited?
There is no known exploitation of CVE-2021-27342 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-255g-8gjp-2wq6.