Inefficient regular expression complexity in pygments - CVE-2022-40896
Published: October 18, 2023
Vulnerability identifier: #VU82226
CSH Severity: Medium
CVSS v4.0: 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-2022-40896
CWE-ID: CWE-1333
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: pygments
Affected software:
pygments
pygments
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing untrusted input with a regular expressions in pygments/lexers/smithy.py. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
How to mitigate CVE-2022-40896
Install update from vendor's website.