CVE-2021-31439

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 5.8 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:A/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 6.5 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-492/	Third Party Advisory VDB Entry
https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html	Mailing List Third Party Advisory
https://www.debian.org/security/2023/dsa-5503	Third Party Advisory
https://security.gentoo.org/glsa/202311-02	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:synology:diskstation_manager:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:10.0:::::::*
	cpe:2.3:o:debian:debian_linux:11.0:::::::*

Configuration 3 (hide)

cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:*

Information

Published : 2021-05-21 15:15

Updated : 2023-11-22 20:34

NVD link : CVE-2021-31439

Mitre link : CVE-2021-31439

JSON object : View

Products Affected

synology

diskstation_manager

debian

debian_linux

netatalk

netatalk

CWE

CWE-787

Out-of-bounds Write

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