Advisory Details

October 4th, 2023

A10 Thunder ADC FileMgmtExport Directory Traversal Arbitrary File Read and Deletion Vulnerability

ZDI-23-1496
ZDI-CAN-17905

CVE ID CVE-2023-42130
CVSS SCORE 8.3, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
AFFECTED VENDORS A10
AFFECTED PRODUCTS Thunder ADC
VULNERABILITY DETAILS

This vulnerability allows remote attackers to read and delete arbitrary files on affected installations of A10 Thunder ADC. Authentication is required to exploit this vulnerability.

The specific flaw exists within the FileMgmtExport 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 read and delete files in the context of the service account.

ADDITIONAL DETAILS A10 has issued an update to correct this vulnerability. More details can be found at:
https://support.a10networks.com/support/security_advisory/a10-acos-file-access-vulnerability/
DISCLOSURE TIMELINE
  • 2022-09-20 - Vulnerability reported to vendor
  • 2023-10-04 - Coordinated public release of advisory
CREDIT Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
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