CVE-2013-5123

Name: CVE-2013-5123
Creator: NVD / NIST
Published: 2019-11-05T22:15:10.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 7.99%

Last modified Jun 16, 2026

CVE-2013-5123 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.. EPSS estimates a 7.99% chance of exploitation in the next 30 days.

Description

The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

7.99%

94.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Pypa	Pip	< 1.5
Virtualenv	Virtualenv	12.0.7
Fedoraproject	Fedora	20
Fedoraproject	Fedora	21
Redhat	Openshift	1.0
Redhat	Openshift	2.0
Redhat	Software Collections	All versions
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155248.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155291.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/08/21/17Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/08/21/18Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/77520Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-5123Issue Tracking, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2013-5123Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2013-5123Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155248.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155291.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/08/21/17Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/08/21/18Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/77520Broken Link, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-5123Issue Tracking, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2013-5123Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2013-5123Third Party Advisory

Timeline

Published: Nov 5, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5123?

The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.

How severe is CVE-2013-5123?

CVE-2013-5123 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 7.99% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5123?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST