Ubuntu Security Notice 5701-1 - Yeting Li discovered that Jinja2 incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service.
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Ubuntu Security Notice USN-5701-1
October 26, 2022
jinja2 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
Jinja2 could be made to hang if it received specially crafted input.
Software Description:
- jinja2: small but fast and easy to use stand-alone template engine
Details:
Yeting Li discovered that Jinja2 incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
python-jinja2 2.8-1ubuntu0.1+esm1
python3-jinja2 2.8-1ubuntu0.1+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5701-1
CVE-2020-28493