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AUSCERT External Security Bulletin Redistribution
ESB-2023.1478
FortiOS / FortiProxy - Path traversal vulnerability allows VDOM escaping
10 March 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: FortiOS
FortiProxy
Publisher: Fortinet
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-42476
Original Bulletin:
https://www.fortiguard.com/psirt/FG-IR-22-401
Comment: CVSS (Max): 8.2 CVE-2022-42476 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
CVSS Source: Fortinet
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Note: Mismatch between CVSS Score reported by bulletin and Max score:
(7.8 refers to Temporal Score, 8.2 to Base Score)
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IR Number: FG-IR-22-401
Date: Mar 7, 2023
Severity: High
CVSSv3 Score: 7.8
Impact: Escalation of privilege
CVE ID: CVE-2022-42476
Affected Products:
FortiOS : 7.2.3, 7.2.2, 7.2.1, 7.2.0, 7.0.9, 7.0.8, 7.0.7, 7.0.6, 7.0.5, 7.0.4,
7.0.3, 7.0.2, 7.0.1, 7.0.0, 6.4.9, 6.4.8, 6.4.7, 6.4.6, 6.4.5, 6.4.4, 6.4.3,
6.4.2, 6.4.11, 6.4.10, 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4,
6.2.3, 6.2.2, 6.2.13, 6.2.12, 6.2.11, 6.2.10, 6.2.1, 6.2.0
FortiProxy : 7.2.1, 7.2.0, 7.0.7, 7.0.6, 7.0.5, 7.0.4, 7.0.3, 7.0.2, 7.0.1, 7.0.0,
2.0.9, 2.0.8, 2.0.7, 2.0.6, 2.0.5, 2.0.4, 2.0.3, 2.0.2, 2.0.11, 2.0.10, 2.0.1,
2.0.0, 1.2.9, 1.2.8, 1.2.7, 1.2.6, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.13, 1.2.12,
1.2.11, 1.2.10, 1.2.1, 1.2.0, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0
Summary
A relative path traversal vulnerability [CWE-23] in FortiOS and FortiProxy may allow privileged VDOM
administrators to escalate their privileges to super admin of the box via crafted CLI requests.
Affected Products
FortiOS version 7.2.0 through 7.2.3
FortiOS version 7.0.0 through 7.0.8
FortiOS version 6.4.0 through 6.4.11
FortiOS version 6.2.0 through 6.2.12
FortiProxy version 7.2.0 through 7.2.1
FortiProxy version 7.0.0 through 7.0.7
FortiProxy version 2.0.0 through 2.0.11
FortiProxy version 1.2.0 through 1.2.13
FortiProxy version 1.1.0 through 1.1.6
Note: Impact on FortiProxy 7.0.x, 2.0.x, 1.2.x, 1.1.x is minor as it does not have VDOMs
Solutions
Please upgrade to FortiProxy version 7.2.2 or above
Please upgrade to FortiProxy version 7.0.8 or above
Please upgrade to FortiOS version 7.2.4 or above
Please upgrade to FortiOS version 7.0.9 or above
Please upgrade to FortiOS version 6.4.12 or above
Please upgrade to FortiOS version 6.2.13 or above
Acknowledgement
Internally discovered and reported by Théo Leleu of Fortinet Product Security team.
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