CVE-2021-23484 Arbitrary File Write via Archive Extraction (Zip Slip)
Attackers can write arbitrary files outside the intended directory via crafted zip archives in the zip-local library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-23484?
CVE-2021-23484 is a critical path traversal vulnerability in n/a, published on 28 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The package zip-local before 0.3.5 are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) which can lead to an extraction of a crafted file outside the intended extraction directory.
Weakness: CWE-22
Which versions are affected by CVE-2021-23484?
2 open source packages ship an affected version, including zip-local. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
zip-local npm | All versions | 0.3.5 |
zip-local npm | All versions | 0.3.5 |
Products include Zip-Local Project Zip-Local.
How do I fix CVE-2021-23484?
Upgrade zip-local to 0.3.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-23484 being exploited?
There is no known exploitation of CVE-2021-23484 in the wild and no public exploit code.
Sources
Also known as GHSA-wxj7-97fp-j53j, SNYK-JS-ZIPLOCAL-2327477.