Inefficient regular expression complexity in Showdown - CVE-2024-1899
Published: February 27, 2024
Vulnerability identifier: #VU86811
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2024-1899
CWE-ID: CWE-1333
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation in subparser when processing links with a regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Affected software
Showdown
watsonx Code Assistant On Prem
IBM Fusion HCI
watsonx Code Assistant On Prem
IBM Fusion HCI
How to mitigate CVE-2024-1899
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
watsonx Code Assistant On Prem - update to 5.3.1
IBM Fusion HCI - update to 2.9.0
IBM Fusion HCI - update to 2.9.0