RCE in Carrierwave Project
CVE-2021-21305
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.127 (96.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.127 · newest: 0.127 · change: 0.000
Affected products
- Carrierwave Project
- Carrierwaveuploader Carrierwave — versions < 1.3.2, >= 2.0.0, < 2.1.1
Weakness classification (CWE)
References
- github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)
- github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)
- github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-cf3w-g86h-3… (Exploit, Third Party Advisory)
- rubygems.org/gems/carrierwave (Product, Third Party Advisory)
- github.com/carrierwaveuploader/carrierwave/commit/387116f5c72efa42bc3938d946b4c… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21305?
- CVE-2021-21305 is a high-severity vulnerability in Carrierwave Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2021-02-08.
- How severe is CVE-2021-21305?
- High severity. CVSS v3 base score is 7.4 out of 10.