[ASA-202102-20] python2-jinja: denial of service
rgacogne at archlinux.org
Fri Feb 12 07:12:07 UTC 2021
Arch Linux Security Advisory ASA-202102-20
Date : 2021-02-07
CVE-ID : CVE-2020-28493
Package : python2-jinja
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-1523
The package python2-jinja before version 2.11.3-1 is vulnerable to
denial of service.
Upgrade to 2.11.3-1.
# pacman -Syu "python2-jinja>=2.11.3-1"
The problem has been fixed upstream in version 2.11.3.
A security issue was found in python-jinja before version 2.11.3. The
regular expression denial of service vulnerability is mainly due to the
sub-pattern [a-zA-Z0-9._-]+.[a-zA-Z0-9._-]+ This issue can be mitigated
by Markdown to format user content instead of the urlize filter, or by
implementing request timeouts and limiting process memory.
A remote user might cause a huge CPU utilization via specially crafted
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