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CVE-2013-1633

18
FAUCET Score

CVE-2013-1633 describes a vulnerability in setuptools before version 0.7, where the easy_install utility retrieves packages from PyPI over unencrypted HTTP without integrity checks. This allows a man-in-the-middle attacker to inject malicious code into downloaded packages, leading to arbitrary code execution. The vulnerability has a CVSS score of 6.8, indicating a medium severity with network-based attacks and moderate complexity, potentially impacting confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7b4CPE matchmatch criteria
cpe:2.3:a:python:setuptools:*:*:*:*:*:*:*:*
0.6.40CPE matchmatch criteria
cpe:2.3:a:python:setuptools:0.6.40:*:*:*:*:*:*:*
0.6.41CPE matchmatch criteria
cpe:2.3:a:python:setuptools:0.6.41:*:*:*:*:*:*:*
0.6.42CPE matchmatch criteria
cpe:2.3:a:python:setuptools:0.6.42:*:*:*:*:*:*:*
0.6.43CPE matchmatch criteria
cpe:2.3:a:python:setuptools:0.6.43:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.95%
Probability of exploitation in next 30 days
EPSS Percentile
78.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0195 is in the 62nd percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

pippatch availablevia ghsa
Product: setuptoolsFixed in: 0.7
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: python-setuptools
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: python-setuptools
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: python33-python-virtualenv
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: python27-python-virtualenv
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: python33-python-setuptools
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: python27-python-setuptools
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 1Fixed in: python-setuptools
redhatend of lifevia redhat_api
Product: OpenShift Enterprise 1Fixed in: python-virtualenv

Vendor Advisories (3)

pipGHSA-27x4-j476-jp5fhigh

Setuptools vulnerable to Man-in-the-middle attacks

May 17, 2022
microsoft2013-Aug/CVE-2013-1633Moderate

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.

Aug 2, 2013
redhatCVE-2013-1633Moderate

python-setuptools: easy_install insecure installation mechanism

Jun 2, 2013

References

pypi.python.org / pypi/setuptools/0.9.8
Vendor Advisory
reddit.com / r/Python/comments/17rfh7/warning_dont_use_pip_in_an_untrusted_network_a