CVE-2016-5699

6.1 MEDIUM
Published: September 02, 2016 Modified: May 06, 2026
View on NVD

Description

CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html
Source: secalert@redhat.com
Exploit Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/06/14/7
Source: secalert@redhat.com
Mailing List
http://www.openwall.com/lists/oss-security/2016/06/15/12
Source: secalert@redhat.com
Mailing List
http://www.openwall.com/lists/oss-security/2016/06/16/2
Source: secalert@redhat.com
Mailing List
http://www.securityfocus.com/bid/91226
Source: secalert@redhat.com
http://www.splunk.com/view/SP-CAAAPSV
Source: secalert@redhat.com
http://www.splunk.com/view/SP-CAAAPUE
Source: secalert@redhat.com
https://hg.python.org/cpython/raw-file/v2.7.10/Misc/NEWS
Source: secalert@redhat.com
Release Notes
https://hg.python.org/cpython/rev/1c45047c5102
Source: secalert@redhat.com
Patch
https://hg.python.org/cpython/rev/bf3e1c9b80e9
Source: secalert@redhat.com
Patch
http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1626.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-1627.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-1628.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-1629.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-1630.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2016/06/14/7
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2016/06/15/12
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2016/06/16/2
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.securityfocus.com/bid/91226
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.splunk.com/view/SP-CAAAPSV
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.splunk.com/view/SP-CAAAPUE
Source: af854a3a-2127-422b-91ae-364da2661108
https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-4
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://hg.python.org/cpython/raw-file/v2.7.10/Misc/NEWS
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://hg.python.org/cpython/rev/1c45047c5102
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://hg.python.org/cpython/rev/bf3e1c9b80e9
Source: af854a3a-2127-422b-91ae-364da2661108
Patch

38 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.1 / 10.0
EPSS (Exploit Probability)
41.7%
97th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

python