#VU42675 Input validation error in setuptools - CVE-2013-1633

Vulnerability identifier: #VU42675

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-1633

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
setuptools
Other software / Other software solutions

Vendor: Python Packaging Authority

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

easy_install in setuptools before 0.7 uses HTTP to retrieve packages from the PyPI repository, and does not perform integrity checks on package contents, which allows man-in-the-middle attackers to execute arbitrary code via a crafted response to the default use of the product.

Mitigation
Install update from vendor's website.

Vulnerable software versions

setuptools: 0.6.40 - 0.6.49

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External links
https://www.reddit.com/r/Python/comments/17rfh7/warning_dont_use_pip_in_an_untrusted_network_a/
https://pypi.python.org/pypi/setuptools/0.9.8#changes

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.