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             AUSCERT External Security Bulletin Redistribution

     Security updates for PAN-OS in v7.1.25, v8.0.20, 8.1.8 and 9.0.5
                              5 December 2019


        AusCERT Security Bulletin Summary

Product:           PAN-OS
Publisher:         Palo Alto
Operating System:  Network Appliance
Impact/Access:     Increased Privileges   -- Existing Account      
                   Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-17437 CVE-2019-1559 

Original Bulletin: 

Comment: This bulletin contains two (2) Palo Alto security advisories.

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Custom-role users may escalate privileges (CVE-2019-17437) (PAN-SA-2019-0038)

Last revised: 12/04/2019


An improper authentication check in Palo Alto Networks PAN-OS may allow an
authenticated low privileged non-superuser custom role user to elevate
privileges and become superuser. This issue only affects devices configured
with a low privileged custom-role user. This issue was discovered by an
external security researcher. This issue was internally tracked as PAN-115697.
This has been assigned CVE-2019-17437.

Severity: HIGH

CVSS Score for this issue is 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Products Affected

This issue affects PAN-OS 7.1 versions prior to 7.1.25; 8.0 versions prior to
8.0.20; 8.1 versions prior to 8.1.11; 9.0 versions prior to 9.0.5. PAN-OS
version 7.0 and prior EOL versions have not been evaluated for this issue.

Available Updates

This issue has been resolved in 7.1.25, 8.0.20, 8.1.11, 9.0.5 and all
subsequent versions.

Workarounds and Mitigations

Remove any untrusted custom-role users from the device or disable their access
until fixes can be applied. Restrict access to the device to only trusted


Christophe Schleypen of NCIA / NCIRC

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OpenSSL vulnerability CVE-2019-1559 has been resolved in PAN-OS

Last revised: 12/04/2019


The OpenSSL library has been updated in PAN-OS to resolve CVE-2019-1559. This
is a cryptographic vulnerability that under certain situations may allow a
remote attacker to decrypt data by observing server responses to different
types of errors. This issue was internally tracked as PAN-114984.

Severity: MEDIUM

CVSS Score for this issue is 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Products Affected

This issue affects Palo Alto Networks PAN-OS 7.1 versions prior to 7.1.25; 8.0
versions prior to 8.0.20; 8.1 versions prior to 8.1.8; 9.0 versions prior to
9.0.2. PAN-OS 7.0 and prior EOL versions have not been evaluated for this

Available Updates

This issue has been fixed in 7.1.25, 8.0.20, 8.1.8, 9.0.2 and all subsequent

Workarounds and Mitigations

There are no available workarounds.



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