National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-5699 Detail

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.

Source:  MITRE      Last Modified:  09/02/2016

Quick Info

CVE Dictionary Entry:
CVE-2016-5699
Original release date:
09/02/2016
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
6.1 Medium
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N (legend)
Impact Score:
2.7
Exploitability Score:
2.8
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Changed
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
None
CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html Exploit; Third Party Advisory External Source MISC http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html
http://rhn.redhat.com/errata/RHSA-2016-1626.html External Source REDHAT RHSA-2016:1626
http://rhn.redhat.com/errata/RHSA-2016-1627.html External Source REDHAT RHSA-2016:1627
http://rhn.redhat.com/errata/RHSA-2016-1628.html External Source REDHAT RHSA-2016:1628
http://rhn.redhat.com/errata/RHSA-2016-1629.html External Source REDHAT RHSA-2016:1629
http://rhn.redhat.com/errata/RHSA-2016-1630.html External Source REDHAT RHSA-2016:1630
http://www.openwall.com/lists/oss-security/2016/06/14/7 Mailing List External Source MLIST [oss-security] 20160614 CVE request: Python HTTP header injection in urrlib2/urllib/httplib/http.client
http://www.openwall.com/lists/oss-security/2016/06/15/12 Mailing List External Source MLIST [oss-security] 20160615 Re: CVE request: Python HTTP header injection in urrlib2/urllib/httplib/http.client
http://www.openwall.com/lists/oss-security/2016/06/16/2 Mailing List External Source MLIST [oss-security] 20160616 Re: CVE request: Python HTTP header injection in urrlib2/urllib/httplib/http.client
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html External Source CONFIRM http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/91226 External Source BID 91226
http://www.splunk.com/view/SP-CAAAPSV External Source CONFIRM http://www.splunk.com/view/SP-CAAAPSV
http://www.splunk.com/view/SP-CAAAPUE External Source CONFIRM http://www.splunk.com/view/SP-CAAAPUE
https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-4 Release Notes External Source CONFIRM https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-4
https://hg.python.org/cpython/raw-file/v2.7.10/Misc/NEWS Release Notes External Source CONFIRM https://hg.python.org/cpython/raw-file/v2.7.10/Misc/NEWS
https://hg.python.org/cpython/rev/1c45047c5102 Patch External Source CONFIRM https://hg.python.org/cpython/rev/1c45047c5102
https://hg.python.org/cpython/rev/bf3e1c9b80e9 Patch External Source CONFIRM https://hg.python.org/cpython/rev/bf3e1c9b80e9

Technical Details

Vulnerability Type (View All)

  • Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') (CWE-113)

Change History 8 change records found - show changes