Ruby up to 2.4.7/2.5.6/2.6.4 lib/shell.rb Argument injection

Summaryinfo

A vulnerability was found in Ruby up to 2.4.7/2.5.6/2.6.4. It has been rated as critical. The affected element is an unknown function in the library lib/shell.rb. The manipulation as part of Argument leads to injection. This vulnerability is referenced as CVE-2019-16255. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Ruby up to 2.4.7/2.5.6/2.6.4 (Programming Language Software). This issue affects an unknown function in the library lib/shell.rb. The manipulation as part of a Argument leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

The weakness was published 11/26/2019 (Website). The advisory is shared at ruby-lang.org. The identification of this vulnerability is CVE-2019-16255 since 09/11/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

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 CERT Bund (WID-SEC-2023-1110). Similar entry is available at VDB-146404. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• Open Source Arch Linux
• Open Source Ruby

Productinfo

Type

• Programming Language Software

Name

• Ruby

Version

• 2.4.0
• 2.4.1
• 2.4.2
• 2.4.3
• 2.4.4
• 2.4.5
• 2.4.6
• 2.4.7
• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4

License

• open-source

CPE 2.3info

• 🔍
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CPE 2.2info

• 🔍
• 🔍
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Entryinfo

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