CVE-2021-28846 Denial of service in n/a
Remote attackers can cause denial of service on TRENDnet access points by sending malformed POST requests triggering a format string logic bug.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-28846?
CVE-2021-28846 is a medium-severity denial of service vulnerability in n/a, published on 10 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with "%s: key len = %d, too long\n" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.
Weakness: CWE-134
Which versions are affected by CVE-2021-28846?
It affects 4 products.
Products include Trendnet Tew-755ap2kac Firmware, Trendnet Tew-755ap Firmware, Trendnet Tew-821dap2kac Firmware, Trendnet Tew-825dap Firmware.
How do I fix CVE-2021-28846?
No fix has been published for CVE-2021-28846 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-28846 being exploited?
There is no known exploitation of CVE-2021-28846 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-7xq3-xc97-hhr3.