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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2021-21305)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7497-1 advisory.

    Rikita Ishikawa discovered that CarrierWave did not correctly sanitize certain inputs. An attacker could     possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu     20.04 LTS. (CVE-2021-21305)

    Norihide Saito discovered that CarrierWave did not correctly sanitize certain inputs. An attacker could     possibly use this issue to execute a cross-site scripting (XSS) attack. (CVE-2023-49090)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Community reports :

Fix Code Injection vulnerability in CarrierWave::RMagick

Fix SSRF vulnerability in the remote file download feature

ID	Name	Product	Family	Severity
256094	Linux Distros Unpatched Vulnerability : CVE-2021-21305	Nessus	Misc.	high
235428	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : CarrierWave vulnerabilities (USN-7497-1)	Nessus	Ubuntu Local Security Checks	high
149071	FreeBSD : Carrierwave -- Multiple vulnerabilities (76a07f31-a860-11eb-8ddb-001b217b3468)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2021-21305

high

Tenable Plugins

high

high

high