CVE-2021-21305: Code Injection vulnerability in CarrierWave
First published: Mon Feb 08 2021(Updated: )
CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The "#manipulate!" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Carrierwave | <1.3.2 | |
| Carrierwave | >=2.0.1<2.1.1 | |
| debian/ruby-carrierwave | 1.3.2-2 |
Remedy
https://github.com/carrierwaveuploader/carrierwave/commit/387116f5c72efa42bc3938d946b4c8d2f22181b7
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Reference Links
- https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#132---2021-02-08
- https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#211---2021-02-08
- https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-cf3w-g86h-35x4
- https://rubygems.org/gems/carrierwave
- https://github.com/carrierwaveuploader/carrierwave/commit/387116f5c72efa42bc3938d946b4c8d2f22181b7
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21305
- https://nvd.nist.gov/vuln/detail/CVE-2021-21305
- https://launchpad.net/bugs/cve/CVE-2021-21305
- https://security-tracker.debian.org/tracker/CVE-2021-21305
- https://ubuntu.com/security/CVE-2021-21305
- https://github.com/carrierwaveuploader/carrierwave/commit/eb9346df598a758a5f8c4a338852982fd7f8f6b8
Frequently Asked Questions
What is CVE-2021-21305?
CVE-2021-21305 is a code injection vulnerability in CarrierWave, an open-source RubyGem for uploading files from Ruby applications.
What is the severity of CVE-2021-21305?
CVE-2021-21305 has a severity rating of 8.8, which is considered high.
How does CVE-2021-21305 affect CarrierWave?
CVE-2021-21305 affects CarrierWave versions before 1.3.2 and 2.1.1.
What is the CWE ID of CVE-2021-21305?
CVE-2021-21305 has CWE IDs 94 and 74.
How can I fix CVE-2021-21305?
To fix CVE-2021-21305, upgrade CarrierWave to version 1.3.2 or 2.1.1 or later.
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