#VU50430 Incorrect Regular Expression in Jinja - CVE-2020-28493
Published: February 1, 2021 / Updated: February 9, 2021
Vulnerability identifier: #VU50430
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-28493
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Jinja
Jinja
Software vendor:
The Pallets Projects
The Pallets Projects
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect subpattern applied to untrusted input. A remote attacker can pass specially crafted data to the application and perform a regular expression DoS (ReDOS) attack.
Remediation
Install updates from vendor's website.