CVE-2020-7665 Arbitrary File Write via Archive Extraction (Zip Slip)
Attackers can write arbitrary files outside the intended directory via malicious zip archives in the u-root Go 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-2020-7665?
CVE-2020-7665 is a high-severity path traversal vulnerability in github.com/u-root/u-root/pkg/uzip, published on 1 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects all versions of package github.com/u-root/u-root/pkg/uzip. It is vulnerable to both leading and non-leading relative path traversal attacks in zip file extraction.
Weakness: CWE-22
Which versions are affected by CVE-2020-7665?
3 open source packages ship an affected version, including github.com/u-root/u-root. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/u-root/u-root Go | All versions | 0.9.0 |
github.com/u-root/u-root Go | All versions | 0.9.0 |
github.com/u-root/u-root Go | All versions | 0.9.0 |
Products include U-Root U-Root.
How do I fix CVE-2020-7665?
Upgrade github.com/u-root/u-root to 0.9.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-7665 being exploited?
There is no known exploitation of CVE-2020-7665 in the wild and no public exploit code.
Other vulnerabilities in github.com/u-root/u-root/pkg/uzip
Sources
Also known as GHSA-58pf-pcwv-qg85, GO-2022-0793.