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AUSCERT External Security Bulletin Redistribution
ESB-2018.3831
lxml vulnerability patched in Ubuntu
11 December 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: lxml
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-19787
Reference: ESB-2018.3829
Original Bulletin:
http://www.ubuntu.com/usn/usn-3841-1
http://www.ubuntu.com/usn/usn-3841-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
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==========================================================================
Ubuntu Security Notice USN-3841-1
December 10, 2018
lxml vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
lxml could allow cross-site scripting (XSS) attacks.
Software Description:
- - lxml: pythonic binding for the libxml2 and libxslt libraries
Details:
It was discovered that lxml incorrectly handled certain HTML files.
An attacker could possibly use this issue to conduct cross-site
scripting (XSS) attacks.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
python-lxml 4.2.1-1ubuntu0.1
python3-lxml 4.2.1-1ubuntu0.1
Ubuntu 16.04 LTS:
python-lxml 3.5.0-1ubuntu0.1
python3-lxml 3.5.0-1ubuntu0.1
Ubuntu 14.04 LTS:
python-lxml 3.3.3-1ubuntu0.2
python3-lxml 3.3.3-1ubuntu0.2
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3841-1
CVE-2018-19787
Package Information:
https://launchpad.net/ubuntu/+source/lxml/4.2.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/lxml/3.5.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/lxml/3.3.3-1ubuntu0.2
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==========================================================================
Ubuntu Security Notice USN-3841-2
December 10, 2018
lxml vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
lxml could allow cross-site scripting (XSS) attacks.
Software Description:
- - lxml: pythonic binding for the libxml2 and libxslt libraries
Details:
USN-3841-1 fixed a vulnerability in lxml. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that lxml incorrectly handled certain HTML files.
An attacker could possibly use this issue to conduct cross-site
scripting (XSS) attacks.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
python-lxml 2.3.2-1ubuntu0.3
python3-lxml 2.3.2-1ubuntu0.3
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3841-2
https://usn.ubuntu.com/usn/usn-3841-1
CVE-2018-19787
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