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AUSCERT External Security Bulletin Redistribution
Traps: Insecure temporary file vulnerability may allow
privilege escalation on Windows
13 May 2020
AusCERT Security Bulletin Summary
Publisher: Palo Alto
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
Overwrite Arbitrary Files -- Existing Account
CVE Names: CVE-2020-1991
Revision History: May 13 2020: Vendor released update to clarify affected versions
April 9 2020: Initial Release
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Palo Alto Networks Security Advisories / CVE-2020-1991
CVE-2020-1991 Traps: Insecure temporary file vulnerability may allow privilege
escalation on Windows
Severity 7.8 . HIGH
Attack Vector LOCAL
Attack Complexity LOW
Privileges Required LOW
User Interaction NONE
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH
An insecure temporary file vulnerability in Palo Alto Networks Traps allows a
local authenticated Windows user to escalate privileges or overwrite system
This issue affects Palo Alto Networks Traps 5.0 versions before 5.0.8; 6.1
versions before 6.1.4 on Windows; all versions of 6.0, 4.2, 4.1, and older
releases on Windows.
This issue does not affect Cortex XDR 7.0.
This issue does not affect Traps for Linux or MacOS.
Versions Affected Unaffected
6.1 < 6.1.4 on Windows >= 6.1.4 on Windows
6.0 6.0.* on Windows
5.0 < 5.0.8 on Windows >= 5.0.8 on Windows
4.2 4.2.* on Windows
CVSSv3.1 Base Score: 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
This issue is fixed in Traps 5.0.8, 6.1.4 and later versions.
Workarounds and Mitigations
There are no viable workarounds for this issue.
Palo Alto Networks thanks Lasse Trolle Borup of Danish Cyber Defence for
discovering and reporting this issue.
2020-05-12 Updated affected versions
2020-04-08 Initial publication
Policy Report vulnerabilitiesManage subscriptions
(C) 2020 Palo Alto Networks, Inc. All rights reserved.
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