CVE-2018-19787

An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to CVE-2014-3146.

CVSS v3 6.1 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109	Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00001.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00044.html
https://usn.ubuntu.com/3841-1/	Third Party Advisory
https://usn.ubuntu.com/3841-2/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::

History

No history.

Information

Published : 2018-12-02 10:29

Updated : 2023-12-10 12:44

NVD link : CVE-2018-19787

Mitre link : CVE-2018-19787

CVE.ORG link : CVE-2018-19787

JSON object : View

Products Affected

canonical

ubuntu_linux

lxml

lxml

debian

debian_linux

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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