Advisory Details

October 18th, 2023

F5 BIG-IP OS unzip Directory Traversal Remote Code Execution Vulnerability

ZDI-23-1559
ZDI-CAN-21463

CVE ID CVE-2023-41373
CVSS SCORE 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS F5
AFFECTED PRODUCTS BIG-IP OS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of F5 BIG-IP OS. Authentication is required to exploit this vulnerability.

The specific flaw exists within the unzip method. 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 the apache user.

ADDITIONAL DETAILS F5 has issued an update to correct this vulnerability. More details can be found at:
https://my.f5.com/manage/s/article/K000135689
DISCLOSURE TIMELINE
  • 2023-07-20 - Vulnerability reported to vendor
  • 2023-10-18 - Coordinated public release of advisory
CREDIT Alex Birnberg
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