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AUSCERT Security Bulletin
AN-OS on PA-7000 Series: Improper restriction of communication to Log
Forwarding Card (LFC) allows root access (CVE-2019-17440)
20 December 2019
AusCERT Security Bulletin Summary
Operating System: Network Appliance
Impact/Access: Root Compromise -- Remote/Unauthenticated
CVE Names: CVE-2019-17440
Member content until: Sunday, January 19 2020
Palo-Alto advises that improper restriction of communication to Log
Forwarding Card allows root access to PAN-OS 9.0 versions prior to
9.0.5-h3 on PA-7000 Series. 
"Improper restriction of communications to Log Forwarding Card (LFC)
on PA-7000 Series devices with second-generation Switch Management
Card (SMC) may allow an attacker with network access to the LFC to
gain root access to PAN-OS."
"This has been assigned CVE-2019-17440. This issue is of type
CWE-923 (Improper Restriction of Communication Channel to Intended
Endpoints). This issue only affected a very limited number of
customers and we undertook individual outreach to help them upgrade.
At the time of publication, all identified customers have upgraded
SW or content and are not impacted.
CVSS Score for this issue is 10
(CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) as it allows an
attacker with network access to the LFC to gain root access to the
"This issue is fixed in 9.0.5-h3 and all subsequent releases. Content update
8218-5815 also fixes the issue."
 PAN-OS on PA-7000 Series: Improper restriction of communication to
Log Forwarding Card (LFC) allows root access (CVE-2019-17440)
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
Australian Computer Emergency Response Team
The University of Queensland
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Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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