CVE-2021-23241 Path traversal in n/a
Attackers can bypass authentication and read arbitrary files on MERCUSYS Mercury X18G routers via directory traversal in web URIs.
- 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-2021-23241?
CVE-2021-23241 is a medium-severity path traversal vulnerability in n/a, published on 7 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MERCUSYS Mercury X18G 1.0.5 devices allow Directory Traversal via ../ in conjunction with a loginLess or login.htm URI (for authentication bypass) to the web server, as demonstrated by the /loginLess/../../etc/passwd URI.
Weakness: CWE-22
Which versions are affected by CVE-2021-23241?
It affects 1 product.
Products include Mercusys Mercury X18g Firmware.
How do I fix CVE-2021-23241?
No fix has been published for CVE-2021-23241 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-23241 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-23241 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in n/a
Sources
Also known as GHSA-7crf-438p-2fw4.