Format string error in Palo Alto PAN-OS - CVE-2020-1992
Published: April 9, 2020
Vulnerability identifier: #VU26742
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-1992
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Palo Alto Networks, Inc.
Affected software:
Palo Alto PAN-OS
Palo Alto PAN-OS
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a format string error in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card (LFC). A remote attacker can supply a specially crafted input that contains format string specifiers and cause a denial of service (DoS) condition or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-1992
Install updates from vendor's website.