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Arch Linux: ASA-202303-01 Low Severity: python-flask Security Flaw

The package python-jinja before version 2.11.3-1 is vulnerable to denial of service. . Arch Linux Security Advisory ASA-202102-19 ========================================= Severity: Low Date : 2021-02-07 CVE-ID : CVE-2020-28493 Package : python-jinja Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-1523 Summary ====== The package python-jinja before version 2.11.3-1 is vulnerable to denial of service. Resolution ========= Upgrade to 2.11.3-1. # pacman -Syu "python-jinja> =2.11.3-1" The problem has been fixed upstream in version 2.11.3. Workaround ========= None. Description ========== 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. Impact ===== A remote user might cause a huge CPU utilization via specially crafted input. References ========= https://security.snyk.io/vuln/SNYK-PYTHON-JINJA2-1012994 https://github.com/pallets/jinja/pull/1343 https://github.com/pallets/jinja/commit/ef658dc3b6389b091d608e710a810ce8b87995b3 https://security.archlinux.org/CVE-2020-28493 . Gentoo Linux Security Advisory GLSA 202103-12 on dev-python/Flask; Minor severity denial of service flaw necessitates updating to version 1.1.2.. Arch Security Advisory, python-jinja Denial of Service, Low Severity Vulnerability. . Severity: Low. LinuxSecurity.com Team

Feb 12, 2021 •Low ArchLinux