CVE-2021-23520 Arbitrary File Write via Archive Extraction (Zip Slip)
Attackers can write arbitrary files outside the intended directory via Zip Slip in the JUCE framework, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-23520?
CVE-2021-23520 is a medium-severity path traversal vulnerability in n/a, published on 31 Jan 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The package juce-framework/juce before 6.1.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) via the ZipFile::uncompressEntry function in juce_ZipFile.cpp. This vulnerability is triggered when the archive is extracted upon calling uncompressTo() on a ZipFile object.
Weakness: CWE-22
Which versions are affected by CVE-2021-23520?
It affects 1 product.
Products include Juce Juce.
How do I fix CVE-2021-23520?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-23520 being exploited?
There is no known exploitation of CVE-2021-23520 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-23520, GHSA-qpj6-xj62-7c95, SNYK-UNMANAGED-JUCEFRAMEWORKJUCE-2388607, UBUNTU-CVE-2021-23520.