Is the PAN-OS product vulnerable to CVE-2021-44142?
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Created On 02/16/22 21:24 PM - Last Modified 06/07/23 22:23 PM
Question
Is the PAN-OS product vulnerable to CVE-2021-44142?
Environment
- PAN-OS 9.1 and above.
- CVE-2021-44142
Answer
Engineering team has confirmed the PANOS is not vulnerable to CVE--2021-44142.
Response:
The smb service and client binaries are not present on PAN-OS. samba-common is used for NTLM authentication for user-id, and captive-portal login
Without the smb service running, its not possible to write to shares defined in /etc/samba/smb.conf.
The other library package samba-common-libs is used to call functions directly.
Additional Information
- PAN-OS-9-1-open-source-software-oss-listing shows Samba3.0.33GPLv2.0
- CVE-2021-44142 :
Issue affecting Samba prior to 4.13.17.
This is a RCE issue which the attacker must need to have a write access to a file's extended attributes. Please review the configuration to verify if the VFS module vfs_fruit exist in the default config ( fruit:metadata=netatalk or fruit:resource=file)
Please remove the "fruit" VFS module from the list.
4.13.17, 4.14.12 and 4.15.5 has been released for the fix. https://www.samba.org/samba/security/CVE-2021-44142.html