CVE-2021-21384: Null characters not escaped in shescape
First published: Thu Mar 18 2021(Updated: )
shescape is a simple shell escape package for JavaScript. In shescape before version 1.1.3, anyone using _Shescape_ to defend against shell injection may still be vulnerable against shell injection if the attacker manages to insert a into the payload. For an example see the referenced GitHub Security Advisory. The problem has been patched in version 1.1.3. No further changes are required.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Shescape Project Shescape | <1.1.3 | |
| Microsoft Windows | ||
| Opengroup Unix |
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Reference Links
Frequently Asked Questions
What is CVE-2021-21384?
CVE-2021-21384 is a vulnerability in the shescape package for JavaScript that allows shell injection if a special character is inserted into the payload.
How does CVE-2021-21384 impact users?
CVE-2021-21384 impacts users of shescape versions up to 1.1.3 who are using the package to defend against shell injection vulnerabilities, as it can still be exploited if a special character is inserted into the payload.
What software versions are affected by CVE-2021-21384?
Versions of shescape up to and including 1.1.3 are affected by CVE-2021-21384.
How severe is CVE-2021-21384?
CVE-2021-21384 has a severity rating of 7.8 (high).
How can I fix CVE-2021-21384?
To fix CVE-2021-21384, users should upgrade to shescape version 1.1.3 or later.
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