#VU27876 Access of Uninitialized Pointer in BIG-IP APM and APM Clients - CVE-2020-5898
Vulnerability identifier: #VU27876
Vulnerability risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-5898
CWE-ID:
CWE-824
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
BIG-IP APM
Hardware solutions /
Security hardware applicances
APM Clients
Hardware solutions /
Security hardware applicances
Vendor: F5 Networks
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the BIG-IP Edge Client Windows Stonewall driver does not sanitize the pointer received from the userland. A local user can send specially crafted DeviceIoControl requests to a \\.\urvpndrv device and crash the Windows kernel.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
BIG-IP APM: 11.6.1 - 15.1.0
APM Clients: 7.1.5 - 7.1.9
External links
https://support.f5.com/csp/article/K69154630
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
