CVE-2021-21305

Publication date 8 February 2021

Last updated 26 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.4 · High

Score breakdown

Description

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.

Status

Package Ubuntu Release Status
ruby-carrierwave 25.10 questing Not in release
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Fixed 1.3.1-2ubuntu0.1~esm1
18.04 LTS bionic
Fixed 1.2.2-1ubuntu0.1~esm1
16.04 LTS xenial
Vulnerable
14.04 LTS trusty Not in release

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Severity score breakdown

Parameter Value
Base score 7.4 · High
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

References

Related Ubuntu Security Notices (USN)

    • USN-7497-1
    • CarrierWave vulnerabilities
    • 7 May 2025

Other references