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Last updated: 3/27/2015 7:58:18 AM

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Vulnerability Summary for CVE-2014-3146

Original release date: 05/14/2014
Last revised: 06/18/2014


Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) attacks via control characters in the link scheme to the clean_html function.


Per: http://cwe.mitre.org/data/definitions/184.html "CWE-184: Incomplete Blacklist"


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (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

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External Source: MLIST
Name: [lxml] 20140415 lxml.html.clean vulnerability
External Source: FULLDISC
Name: 20140415 lxml (python lib) vulnerability
External Source: CONFIRM
Name: http://lxml.de/3.3/changes-3.3.5.html
External Source: UBUNTU
Name: USN-2217-1
External Source: FULLDISC
Name: 20140430 Re: lxml (python lib) vulnerability
External Source: MLIST
Name: [oss-security] 20140509 Re: CVE request: python-lxml clean_html() input sanitization flaw
External Source: BID
Name: 67159
External Source: SUSE
Name: openSUSE-SU-2014:0735

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:lxml:lxml:3.3.4 and previous versions
* cpe:/a:lxml:lxml:3.3.3
* cpe:/a:lxml:lxml:3.3.2
* cpe:/a:lxml:lxml:3.3.1
* cpe:/a:lxml:lxml:3.3.0:-
* cpe:/a:lxml:lxml:3.3.0:beta5
* cpe:/a:lxml:lxml:3.3.0:beta4
* cpe:/a:lxml:lxml:3.3.0:beta3
* cpe:/a:lxml:lxml:3.3.0:beta2
* cpe:/a:lxml:lxml:3.3.0:beta1
* cpe:/a:lxml:lxml:3.2.5
* cpe:/a:lxml:lxml:3.2.4
* cpe:/a:lxml:lxml:3.2.3
* cpe:/a:lxml:lxml:3.2.2
* cpe:/a:lxml:lxml:3.2.1
* cpe:/a:lxml:lxml:3.2.0
* cpe:/a:lxml:lxml:3.1.2
* cpe:/a:lxml:lxml:3.1.1
* cpe:/a:lxml:lxml:3.1.0
* cpe:/a:lxml:lxml:3.1:beta1
* cpe:/a:lxml:lxml:3.0.2
* cpe:/a:lxml:lxml:3.0.1
* cpe:/a:lxml:lxml:3.0:-
* cpe:/a:lxml:lxml:3.0:beta1
* cpe:/a:lxml:lxml:3.0:alpha2
* cpe:/a:lxml:lxml:3.0:alpha1
* cpe:/a:lxml:lxml:2.3.6
* cpe:/a:lxml:lxml:2.3.5
* cpe:/a:lxml:lxml:2.3.4
* cpe:/a:lxml:lxml:2.3.3
* cpe:/a:lxml:lxml:2.3.2
* cpe:/a:lxml:lxml:2.3.1
* cpe:/a:lxml:lxml:2.3:-
* cpe:/a:lxml:lxml:2.3:beta1
* cpe:/a:lxml:lxml:2.3:alpha2
* cpe:/a:lxml:lxml:2.3:alpha1
* cpe:/a:lxml:lxml:2.2.8
* cpe:/a:lxml:lxml:2.2.7
* cpe:/a:lxml:lxml:2.2.6
* cpe:/a:lxml:lxml:2.2.5
* cpe:/a:lxml:lxml:2.2.4
* cpe:/a:lxml:lxml:2.2.3
* cpe:/a:lxml:lxml:2.2.2
* cpe:/a:lxml:lxml:2.2.1
* cpe:/a:lxml:lxml:2.2:-
* cpe:/a:lxml:lxml:2.2:beta4
* cpe:/a:lxml:lxml:2.2:beta3
* cpe:/a:lxml:lxml:2.2:beta2
* cpe:/a:lxml:lxml:2.2:beta1
* cpe:/a:lxml:lxml:2.1.4
* cpe:/a:lxml:lxml:2.0.11
* cpe:/a:lxml:lxml:2.2:alpha1
* cpe:/a:lxml:lxml:2.1.3
* cpe:/a:lxml:lxml:2.0.10
* cpe:/a:lxml:lxml:2.1.2
* cpe:/a:lxml:lxml:2.0.9
* cpe:/a:lxml:lxml:2.1.1
* cpe:/a:lxml:lxml:2.0.8
* cpe:/a:lxml:lxml:2.1:beta3
* cpe:/a:lxml:lxml:2.0.7
* cpe:/a:lxml:lxml:2.1:beta2
* cpe:/a:lxml:lxml:2.1:beta1
* cpe:/a:lxml:lxml:2.0.6
* cpe:/a:lxml:lxml:2.0.5
* cpe:/a:lxml:lxml:2.0.4
* cpe:/a:lxml:lxml:2.0.3
* cpe:/a:lxml:lxml:2.0.2
* cpe:/a:lxml:lxml:2.0.1
* cpe:/a:lxml:lxml:2.0
* cpe:/a:lxml:lxml:2.1:alpha1
* cpe:/a:lxml:lxml:1.3.6
* cpe:/a:lxml:lxml:1.3.5
* cpe:/a:lxml:lxml:1.3.4
* cpe:/a:lxml:lxml:1.3.3
* cpe:/a:lxml:lxml:1.3.2
* cpe:/a:lxml:lxml:1.3.1
* cpe:/a:lxml:lxml:1.3
* cpe:/a:lxml:lxml:1.2.1
* cpe:/a:lxml:lxml:1.2
* cpe:/a:lxml:lxml:1.1.2
* cpe:/a:lxml:lxml:1.1.1
* cpe:/a:lxml:lxml:1.1
* cpe:/a:lxml:lxml:1.0.4
* cpe:/a:lxml:lxml:1.0.3
* cpe:/a:lxml:lxml:1.0.2
* cpe:/a:lxml:lxml:1.0.1
* cpe:/a:lxml:lxml:1.0
* cpe:/a:lxml:lxml:0.9.2
* cpe:/a:lxml:lxml:0.9.1
* cpe:/a:lxml:lxml:0.9
* cpe:/a:lxml:lxml:0.8
* cpe:/a:lxml:lxml:0.7
* cpe:/a:lxml:lxml:0.6
* cpe:/a:lxml:lxml:0.5.1
* cpe:/a:lxml:lxml:0.5

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

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