Ubuntu Security Notice 4896-2 - USN-4896-1 fixed a vulnerability in lxml. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that lxml incorrectly handled certain HTML attributes. A remote attacker could possibly use this issue to perform cross-site scripting attacks. Various other issues were also addressed.
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Ubuntu Security Notice USN-4896-2
April 08, 2021
lxml vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
Summary:
lxml could allow cross-site scripting (XSS) attacks.
Software Description:
- lxml: pythonic binding for the libxml2 and libxslt libraries
Details:
USN-4896-1 fixed a vulnerability in lxml. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that lxml incorrectly handled certain HTML attributes. A
remote attacker could possibly use this issue to perform cross-site
scripting (XSS) attacks.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 ESM:
python-lxml 3.3.3-1ubuntu0.2+esm3
python3-lxml 3.3.3-1ubuntu0.2+esm3
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-4896-2
https://ubuntu.com/security/notices/USN-4896-1
CVE-2021-28957