CVE-2023-5752

When installing a package from a Mercurial VCS URL (ie pip install hg+…) with pip prior to v23.3, the specified Mercurial revision could be used to inject arbitrary configuration options to the hg clone call (ie –config). Controlling the Mercurial configuration can modify how and which repository is installed. This vulnerability does not affect users who arent installing from Mercurial.

Weakness

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.

Affected Software

Name	Vendor	Start Version	End Version
Pip	Pypa	*	23.3 (excluding)
Red Hat Ansible Automation Platform 2.4 for RHEL 8	RedHat	automation-controller-0:4.5.7-1.el8ap	*
Red Hat Ansible Automation Platform 2.4 for RHEL 9	RedHat	automation-controller-0:4.5.7-1.el9ap	*
Python-pip	Ubuntu	bionic	*
Python-pip	Ubuntu	lunar	*
Python-pip	Ubuntu	mantic	*
Python-pip	Ubuntu	trusty	*
Python-pip	Ubuntu	trusty/esm	*
Python-pip	Ubuntu	xenial	*

Extended Description

Command injection vulnerabilities typically occur when:

Many protocols and products have their own custom command language. While OS or shell command strings are frequently discovered and targeted, developers may not realize that these other command languages might also be vulnerable to attacks. Command injection is a common problem with wrapper programs.

Potential Mitigations

Assume all input is malicious. Use an “accept known good” input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, “boat” may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as “red” or “blue.”
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code’s environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2023-5752
CWE	https://cwe.mitre.org/data/definitions/77.html

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Weakness

Affected Software

Extended Description

Potential Mitigations

References

CVE-2023-5752

Improper Neutralization of Special Elements used in a Command ('Command Injection')

Weakness

Affected Software

Extended Description

Potential Mitigations

Related Attack Patterns

References