CVE-2020-21526 Path traversal in n/a
Attackers can bypass directory traversal checks to write arbitrary files, potentially leading to code execution on the Halo blog platform.
- 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-2020-21526?
CVE-2020-21526 is a critical path traversal vulnerability in n/a, published on 30 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.
Weakness: CWE-22
Which versions are affected by CVE-2020-21526?
It affects 1 product.
Products include Halo Halo.
How do I fix CVE-2020-21526?
No fix has been published for CVE-2020-21526 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-2020-21526 being exploited?
There is no known exploitation of CVE-2020-21526 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-44fm-5g3x-mp3f.