Nginx: Access Confidential Data -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1701
          Palo Alto Networks Security Advisories / CVE-2017-7529
                                14 May 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Nginx
Publisher:         Palo Alto
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7529  

Reference:         ESB-2017.2148
                   ESB-2017.1752
                   ESB-2017.1738

Original Bulletin: 
   https://securityadvisories.paloaltonetworks.com/CVE-2017-7529

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Palo Alto Networks Security Advisories / CVE-2017-7529

CVE-2017-7529 PAN-OS: Nginx integer overflow may lead to information leak

047910
Severity 5.3 . MEDIUM
Attack Vector NETWORK
Attack Complexity LOW
Privileges Required NONE
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact LOW
Integrity Impact NONE
Availability Impact NONE
NVD JSON     
Published: 2020-05-13
Updated: 2020-05-13
Ref#: PAN-117479

Description

Nginx web-server included with PAN-OS is vulnerable to an integer overflow
vulnerability that can leak potentially a cache file header if a response was
returned from cache.

This issue affects:

PAN-OS 7.1 versions earlier than 7.1.26;

All versions of PAN-OS 8.0;

PAN-OS 8.1 versions earlier than 8.1.13;

PAN-OS 9.0 versions earlier than 9.0.6.

Product Status

PAN-OS

Versions Affected Unaffected
9.2               >= 9.2.0
9.1               >= 9.1.0
9.0      < 9.0.6  >= 9.0.6
8.1      < 8.1.13 >= 8.1.13
8.0      8.0.*
7.1      < 7.1.26 >= 7.1.26

Severity: MEDIUM

CVSSv3.1 Base Score: 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Solution

This issue is fixed in PAN-OS 7.1.26, PAN-OS 8.1.13, PAN-OS 9.0.6, PAN-OS
9.1.0, PAN-OS 9.2.0, and all later PAN-OS versions.

Workarounds and Mitigations

Attacks against CVE-2017-7529 can be blocked with signatures for Unique Threat
ID 33070 enabled on a different firewall configured to protect the vulnerable
management interfaces.

This issue affects the management interface of PAN-OS and is 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

Timeline

2020-05-13 Initial publication
Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure
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(C) 2020 Palo Alto Networks, Inc. All rights reserved.

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