CVE-2021-23355 Arbitrary Command Injection
Attackers can execute arbitrary commands via unsanitized input in the ps-kill library's kill function, requiring immediate mitigation for Node.js applications.
- 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-2021-23355?
CVE-2021-23355 is a medium-severity command injection vulnerability in ps-kill, published on 15 Mar 2021. 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 ps-kill. If (attacker-controlled) user input is given to the kill function, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization in the index.js file. PoC (provided by reporter): var ps_kill = require('ps-kill'); ps_kill.kill('$(touch success)',function(){});
Weakness: CWE-78
Which versions are affected by CVE-2021-23355?
2 open source packages ship an affected version, including ps-kill. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ps-kill npm | All versions to 1.0.0 | None |
ps-kill npm | All versions to 1.0.0 | None |
Products include Ps-Kill Project Ps-Kill.
How do I fix CVE-2021-23355?
No fix has been published for CVE-2021-23355 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-23355 being exploited?
There is no known exploitation of CVE-2021-23355 in the wild and no public exploit code.
Sources
Also known as GHSA-7qmm-q394-fmch.