Vulnerability Details : CVE-2020-2040
A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially execute arbitrary code with root privileges by sending a malicious request to the Captive Portal or Multi-Factor Authentication interface. This issue impacts: All versions of PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 9.1 versions earlier than PAN-OS 9.1.3.
Vulnerability category: OverflowExecute code
Products affected by CVE-2020-2040
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-2040
3.99%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-2040
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
10.0
|
HIGH | AV:N/AC:L/Au:N/C:C/I:C/A:C |
10.0
|
10.0
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
Palo Alto Networks, Inc. |
CWE ids for CVE-2020-2040
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by:
- nvd@nist.gov (Primary)
- psirt@paloaltonetworks.com (Secondary)
References for CVE-2020-2040
-
https://security.paloaltonetworks.com/CVE-2020-2040
CVE-2020-2040 PAN-OS: Buffer overflow when Captive Portal or Multi-Factor Authentication (MFA) is enabledVendor Advisory
Jump to