Integer underflow in Palo Alto PAN-OS - CVE-2020-2031
Published: July 9, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU29606
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-2031
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow in the dnsproxyd component of the PAN-OS management interface. A remote authenticated administrator attacker can send a specially crafted request to the affected application, trigger integer underflow and perform a denial of service attack by restarting the device and putting it into maintenance mode.
Affected software
Palo Alto PAN-OS
How to mitigate CVE-2020-2031
Install updates from vendor's website.
Palo Alto PAN-OS - update to 9.1.3