RVM versions.conf PWD command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in RVM. This issue affects some unknown processing of the file versions.conf. The manipulation of the argument PWD as part of Environment Variable results in command injection. This vulnerability is reported as CVE-2017-1000037. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in RVM (affected version not known). Affected is some unknown functionality of the file versions.conf. The manipulation of the argument PWD as part of a Environment Variable leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

RVM automatically loads environment variables from files in $PWD resulting in command execution RVM vulnerable to command injection when automatically loading environment variables from files in $PWD RVM automatically executes hooks located in $PWD resulting in code execution RVM automatically installs gems as specified by files in $PWD resulting in code execution RVM automatically does "bundle install" on a Gemfile specified by .versions.conf in $PWD resulting in code execution

The bug was discovered 03/04/2017. The weakness was disclosed 07/17/2017 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2017-1000037 since 07/10/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 135 days. During that time the estimated underground price was around $0-$5k.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• RVM

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion