RDoc up to 6.6.2 YAML File rdoc_options code injection

Summaryinfo

A vulnerability has been found in RDoc up to 6.6.2 and classified as critical. This issue affects the function rdoc_options of the component YAML File Handler. This manipulation causes code injection. This vulnerability is handled as CVE-2024-27281. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in RDoc up to 6.6.2 (Programming Language Software) and classified as critical. Affected by this vulnerability is the function rdoc_options of the component YAML File Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in RDoc 6.3.3 through 6.6.2, as distributed in Ruby 3.x through 3.3.0. When parsing .rdoc_options (used for configuration in RDoc) as a YAML file, object injection and resultant remote code execution are possible because there are no restrictions on the classes that can be restored. (When loading the documentation cache, object injection and resultant remote code execution are also possible if there were a crafted cache.) The main fixed version is 6.6.3.1. For Ruby 3.0 users, a fixed version is rdoc 6.3.4.1. For Ruby 3.1 users, a fixed version is rdoc 6.4.1.1. For Ruby 3.2 users, a fixed version is rdoc 6.5.1.1.

The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2024-27281 since 02/22/2024. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/11/2025). MITRE ATT&CK project uses the attack technique T1059 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 215967 (Ubuntu 16.04 LTS / 18.04 LTS : Ruby vulnerability (USN-6838-2)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (215967). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Programming Language Software

Name

• RDoc

Version

• 6.6.0
• 6.6.1
• 6.6.2

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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