CVEvulnerability

CVE-2021-31439

8.8 HIGH Published 2021-05-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-05-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
8.8 HIGH — CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
5.8 MEDIUM — AV:A/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-122, CWE-787

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology DiskStation Manager. Authentication is not required to exploit this vulnerablity. The specific flaw exists within the processing of DSI structures in Netatalk. 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 current process. Was ZDI-CAN-12326.

Affected configurations

• synology diskstation manager (>= 6.2 < 6.2.3-25426-3) • debian debian linux 10.0 • debian debian linux 11.0 • netatalk netatalk (< 3.1.13)

Related

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-787 Out-of-bounds Write weakness

References