CVE-2020-2027 PAN-OS: Buffer overflow in authd authentication response
Description
A buffer overflow vulnerability in the authd component of the PAN-OS management server allows authenticated administrators to disrupt system processes and potentially execute arbitrary code with root privileges.
This issue affects:
All versions of PAN-OS 7.1 and PAN-OS 8.0;
PAN-OS 8.1 versions earlier than PAN-OS 8.1.13;
PAN-OS 9.0 versions earlier than PAN-OS 9.0.7.
Product Status
| Versions | Affected | Unaffected |
|---|---|---|
| PAN-OS 9.1 | None | >= 9.1.0 |
| PAN-OS 9.0 | < 9.0.7 | >= 9.0.7 |
| PAN-OS 8.1 | < 8.1.13 | >= 8.1.13 |
| PAN-OS 8.0 | 8.0.* | None |
| PAN-OS 7.1 | 7.1.* | None |
Severity: HIGH
CVSSv3.1 Base Score: 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
Weakness Type
CWE-121 Stack-based Buffer Overflow
Solution
This issue is fixed in PAN-OS 8.1.13, PAN-OS 9.0.7, PAN-OS 9.1.0, and all later PAN-OS versions.
PAN-OS 8.0 is end-of-life (as of October 31, 2019) and is no longer covered by our Product Security Assurance policies.
PAN-OS 7.1 is on extended support until June 30, 2020, and we are considering updates only for critical security vulnerability fixes.
Workarounds and Mitigations
This issue affects the management interface of PAN-OS and you can mitigate the impact of this issue by following best practices for securing the PAN-OS management interface. Please review the Best Practices for Securing Administrative Access in the PAN-OS technical documentation, available at https://docs.paloaltonetworks.com/best-practices.