Incorrect Regular Expression in gjson - CVE-2021-42248

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Main Vulnerability Database Vulnerabilities #VU64823

Incorrect Regular Expression in gjson - CVE-2021-42248

Published: June 30, 2022


Vulnerability identifier: #VU64823
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-2021-42248
CWE-ID: CWE-185
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 when processing regular expressions. A remote attacker can pass specially crafted JSON input to the application and perform regular expression denial of service (ReDos) attack.


Affected software

gjson
QRadar Suite
IBM Cloud Pak for Watson AIOps
Netcool Operations Insight

How to mitigate CVE-2021-42248

Install update from vendor's website.

gjson - update to 1.9.3
QRadar Suite - update to 1.10.17.0
IBM Cloud Pak for Watson AIOps - update to 3.5.1
Netcool Operations Insight - update to 1.6.7

External References

Related Security Bulletins