CVE-2021-25282 SaltStack Salt Directory Traversal vulnerability

Critical 9.1 Published 27 Feb 2021 Updated 3 Aug 2024

Attackers can exploit a directory traversal flaw in SaltStack's pillar roots write method to read or modify files outside the intended directory.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-25282?

CVE-2021-25282 is a critical path traversal vulnerability in Debian Debian Linux, published on 27 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in through SaltStack Salt before 3002.5. The salt.wheel.pillar_roots.write method is vulnerable to directory traversal.

Weakness: CWE-22

Which versions are affected by CVE-2021-25282?

19 open source packages ship an affected version, including salt. It affects 3 products.

Package	Affected	Fixed in
`salt` PyPI	All versions	`2015.8.10, 2015.8.13, 2016.3.4, 2016.3.6, 2016.3.8, 2016.11.3, 2016.11.5, 2016.11.10, 2017.7.8, 2019.2.0rc1, 2019.2.5, 2019.2.8, 3000.6, 3001.4, 3002.5`
`salt` PyPI	All versions	`2015.8.13`
`salt` PyPI	All versions	`2015.8.13`
`salt` PyPI	From `2016.11.7`	`2016.11.10`
`salt` PyPI	From `2016.11.7`	`2016.11.10`
`salt` PyPI	From `2016.3.0`	`2016.11.5`

13 more packages

`salt` PyPI	From `2016.3.0`	`2016.11.5`
`salt` PyPI	From `2017.5.0`	`2017.7.8`
`salt` PyPI	From `2017.5.0`	`2017.7.8`
`salt` PyPI	From `2018.2.0` to `2018.3.5`	None
`salt` PyPI	From `2018.2.0` to `2018.3.5`	None
`salt` PyPI	From `2019.2.0`	`2019.2.8`
`salt` PyPI	From `2019.2.0`	`2019.2.8`
`salt` PyPI	From `3000`	`3000.7`
`salt` PyPI	From `3000`	`3000.7`
`salt` PyPI	From `3001`	`3001.5`
`salt` PyPI	From `3001`	`3001.5`
`salt` PyPI	From `3002`	`3002.3`
`salt` PyPI	From `3002`	`3002.3`

Products include Debian Debian Linux, Fedoraproject Fedora, Saltstack Salt.

How do I fix CVE-2021-25282?

Upgrade salt to a fixed version for your release line: 2015.8.10, 2015.8.13, 2016.3.4 or 2016.3.6.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-25282 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25282 exists.

Public exploit code: 1 Metasploit module.

All Debian Debian Linux vulnerabilities

Sources

Also known as GHSA-76x4-x3p6-rpr9, PYSEC-2021-51, UBUNTU-CVE-2021-25282.