Python CPython up to 3.13.0rc1 Tar File redos

Summaryinfo

A vulnerability identified as problematic has been detected in Python CPython up to 3.13.0rc1. This affects an unknown function of the component Tar File Handler. The manipulation leads to redos. This vulnerability is listed as CVE-2024-6232. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Python CPython up to 3.13.0rc1. This issue affects some unknown functionality of the component Tar File Handler. The manipulation with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability. The summary by CVE is:

There is a MEDIUM severity vulnerability affecting CPython. Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-6232 since 06/20/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1449.003 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 207832 (SUSE SLES15 Security Update : python36 (SUSE-SU-2024:3447-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.13.0rc2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (207832) and CERT Bund (WID-SEC-2024-2047). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• F5 BIG-IP
• SUSE Linux
• Oracle Linux
• Gentoo Linux
• SUSE openSUSE
• RESF Rocky Linux
• Broadcom Brocade SANnav
• Open Source Python
• IBM QRadar SIEM
• IBM DB2
• Dell PowerProtect Data Domain
• Dell PowerProtect Data Domain Management Center
• Dell PowerProtect Data Domain OS

Productinfo

Type

• Programming Language Software

Vendor

• Python

Name

• CPython

Version

• 3.13.0rc1

License

• open-source

Website

• Product: https://github.com/python/cpython/

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Be aware that VulDB is the high quality source for vulnerability data.

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