CVE-2018-19787: XSS
First published: Sun Dec 02 2018(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Lxml Lxml | <4.2.5 | |
| Debian Debian Linux | =8.0 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| IBM QRadar SIEM | <=7.5 - 7.5.0 UP8 IF01 | |
| debian/lxml | 4.6.3+dfsg-0.1+deb11u1 4.9.2-1 5.3.0-1 | |
| pip/lxml | <4.2.5 | 4.2.5 |
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Reference Links
- https://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109
- https://lists.debian.org/debian-lts-announce/2018/12/msg00001.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00044.html
- https://usn.ubuntu.com/3841-1/
- https://usn.ubuntu.com/3841-2/
- https://launchpad.net/bugs/cve/CVE-2018-19787
- https://exchange.xforce.ibmcloud.com/vulnerabilities/153601
- https://www.ibm.com/support/pages/node/7150684 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2018-19787
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19787
- https://nvd.nist.gov/vuln/detail/CVE-2018-19787
- https://ubuntu.com/security/CVE-2018-19787
- https://github.com/advisories/GHSA-xp26-p53h-6h2p (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2018-12.yaml
- https://usn.ubuntu.com/3841-1
- https://usn.ubuntu.com/3841-2
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2018-19787.
What is the severity of CVE-2018-19787?
The severity of CVE-2018-19787 is medium with a severity value of 6.1.
What is the affected software?
The affected software is lxml before version 4.2.5.
How can I fix the vulnerability in lxml?
To fix the vulnerability in lxml, update to version 4.2.5 or a higher version.
Where can I find more information about CVE-2018-19787?
You can find more information about CVE-2018-19787 on the MITRE CVE database: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19787
- collector/nvd-index
- agent/author
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- source/Launchpad
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- vendor/lxml
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- version/canonical ubuntu linux/14.04
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- vendor/ibm
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- version/ibm qradar siem/7.5 - 7.5.0 up8 if01
- package-manager/debian
- package-manager/pip