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AUSCERT External Security Bulletin Redistribution
PAN-SA-2020-0006 PAN-OS: Nginx software upgraded to resolve
14 May 2020
AusCERT Security Bulletin Summary
Product: PAN-OS: Nginx
Publisher: Palo Alto
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2016-4450 CVE-2013-0337
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Palo Alto Networks Security Advisories / PAN-SA-2020-0006
PAN-SA-2020-0006 PAN-OS: Nginx software upgraded to resolve multiple
Severity 7.5 . HIGH
Attack Vector NETWORK
Attack Complexity LOW
Privileges Required NONE
User Interaction NONE
Confidentiality Impact NONE
Integrity Impact NONE
Availability Impact HIGH
Nginx software included with PAN-OS has been upgraded to resolve multiple
This issue affects:
All PAN-OS 7.1 and 8.0 versions;
PAN-OS 8.1 versions earlier than 8.1.14;
PAN-OS 9.0 versions earlier than 9.0.7.
The resolved vulnerabilities include:
CVE CVSS Summary
os/unix/ngx_files.c in nginx before 1.10.1 and
7.5 (CVSS:3.0/ 1.11.x before 1.11.1 allows remote attackers to
CVE-2016-4450 AV:N/AC:L/PR:N/ cause a denial of service (NULL pointer
UI:N/S:U/C:N/ dereference and worker process crash) via a
I:N/A:H) crafted request, involving writing a client
request body to a temporary file.
The default configuration of nginx, possibly
7.5 AV:N/AC:L/ 1.3.13 and earlier, uses world-readable
CVE-2013-0337 Au:N/C:P/I:P/ permissions for the (1) access.log and (2)
A:P error.log files, which allows local users to
obtain sensitive information by reading the
Versions Affected Unaffected
9.0 < 9.0.7 >= 9.0.7
8.1 < 8.1.14 >= 8.1.14
CVSSv3.1 Base Score: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
These issues are fixed in PAN-OS 8.1.14, PAN-OS 9.0.7, and all later PAN-OS
PAN-OS 8.0 is now 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 is only being
considered for critical security vulnerability fixes.
Workarounds and Mitigations
Issues that affect the management interface of PAN-OS are strongly mitigated 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.
2020-05-13 Initial publication
Policy Report vulnerabilitiesManage subscriptions
(C) 2020 Palo Alto Networks, Inc. All rights reserved.
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