PT-2020-18798 · F5 · Big-Ip Edge Client

Published 2020-05-12 · Updated 2020-05-14 · CVE-2020-5898

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions BIG-IP Edge Client versions 7.1.5 through 7.1.9

Description The BIG-IP Edge Client Windows Stonewall driver does not properly sanitize pointers received from userland, allowing a local user on the Windows client system to send crafted DeviceIoControl requests to the .urvpndrv device. This can cause the Windows kernel to crash.

Recommendations For versions 7.1.5 through 7.1.9, consider disabling the Stonewall driver as a temporary workaround until a patch is available. Restrict access to the .urvpndrv device to minimize the risk of exploitation. Avoid using the DeviceIoControl requests to the vulnerable device until the issue is resolved.

Fix

Related Identifiers

CVE-2020-5898

Affected Products

Big-Ip Edge Client

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2020-5898 · Security Note
• https://osv.dev/vulnerability/CVE-2020-5898 · Vendor Advisory
• https://support.f5.com/csp/article/K69154630 · Vendor Advisory
• https://t.me/cvenotify/3707 · Telegram Post