Advisory Details

August 21st, 2023

SonicWALL GMS Virtual Appliance Syslog Directory Traversal Remote Code Execution Vulnerability

CVE ID	CVE-2023-34129
CVSS SCORE	8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	SonicWALL
AFFECTED PRODUCTS	GMS Virtual Appliance
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of SonicWALL GMS Virtual Appliance. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the InboundSyslogFile class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	SonicWALL has issued an update to correct this vulnerability. More details can be found at: https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0010
DISCLOSURE TIMELINE	2023-06-13 - Vulnerability reported to vendor 2023-08-21 - Coordinated public release of advisory
CREDIT	Alex Birnberg of Zymo Security

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