NULL pointer dereference in Apex One - CVE-2021-23139
Published: October 14, 2021
Vulnerability identifier: #VU57361
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-2021-23139
CWE-ID: CWE-476
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 a NULL pointer dereference error in the CGI interface. A remote attacker can send a specially crafted request to the application and perform a denial of service (DoS) attack.
Affected software
Apex One
Worry-Free Business Security
Worry-Free Business Security
How to mitigate CVE-2021-23139
Install updates from vendor's website.
Apex One - update to CP 9645
Worry-Free Business Security - update to 10 SP1 Patch 2342
Worry-Free Business Security - update to 10 SP1 Patch 2342