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CVE-2023-40587 : Vulnerability Insights and Analysis

Discover the impact of CVE-2023-40587 on users of Python 3.11 with the Pyramid static view path traversal vulnerability. Learn about affected systems, exploitation, and mitigation steps.

A path traversal vulnerability in Pyramid static view path traversal up one directory has been identified, impacting users of Python 3.11.

Understanding CVE-2023-40587

This vulnerability affects users utilizing a Pyramid static view with a full file system path in specific scenarios.

What is CVE-2023-40587?

Pyramid, an open-source Python web framework, is vulnerable where an

index.html
file located one directory above the static view's path could accidentally be disclosed.

The Impact of CVE-2023-40587

The vulnerability in Pyramid versions 2.0.0 and 2.0.1 exposes users of Python 3.11 to potential information disclosure threats.

Technical Details of CVE-2023-40587

Details of the vulnerability, affected systems, and exploitation mechanisms.

Vulnerability Description

The issue arises from a path traversal vulnerability in Pyramid versions 2.0.0 and 2.0.1, potentially leading to disclosure of the

index.html
file.

Affected Systems and Versions

Users of Python 3.11 utilizing Pyramid versions 2.0.0 and 2.0.1 are affected by this vulnerability.

Exploitation Mechanism

If a full file system path is utilized along with a

index.html
file located one directory above, accidental disclosure can occur.

Mitigation and Prevention

Steps to prevent exploitation and secure affected systems.

Immediate Steps to Take

Consider workarounds, use unaffected Python 3 versions, or downgrade temporarily until fixes are available.

Long-Term Security Practices

Avoid using null bytes in file/directory names and update to Python 3.11.5 or higher once available.

Patching and Updates

Upcoming fixes in Python 3.12.0rc2 and 3.11.5 will address the underlying issue, ensuring proper path traversal security.

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