Advisory Details

August 17th, 2023

RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability

ZDI-23-1152
ZDI-CAN-21233

CVE ID CVE-2023-40477
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS RARLAB
AFFECTED PRODUCTS WinRAR
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of RARLAB WinRAR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of recovery volumes. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS RARLAB has issued an update to correct this vulnerability. More details can be found at:
https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa
DISCLOSURE TIMELINE
  • 2023-06-08 - Vulnerability reported to vendor
  • 2023-08-17 - Coordinated public release of advisory
CREDIT goodbyeselene
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