Advisory Details

July 22nd, 2021

MySQL InnoDB Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-21-889
ZDI-CAN-13551

CVE ID CVE-2021-2429
CVSS SCORE 9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Oracle
AFFECTED PRODUCTS MySQL
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of MySQL. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of InnoDB commands. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.

ADDITIONAL DETAILS Oracle has issued an update to correct this vulnerability. More details can be found at:
https://www.oracle.com/security-alerts/cpujul2021.html
DISCLOSURE TIMELINE
  • 2021-04-28 - Vulnerability reported to vendor
  • 2021-07-22 - Coordinated public release of advisory
CREDIT Anonymous
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