PT-2021-19319 · Synology+4 · Synology Diskstation Manager+4

Angelboy · Published 2021-04-29 · Updated 2025-01-14 · CVE-2021-31439

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Synology DiskStation Manager (affected versions not specified)

Description This issue allows network-adjacent attackers to execute arbitrary code on affected installations. Authentication is not required to exploit this issue. The flaw exists within the processing of DSI structures in Netatalk, resulting 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 issue to execute code in the context of the current process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

ALT-PU-2022-3105

ALT-PU-2023-1957

ALT-PU-2023-5152

ALT-PU-2024-17688

CVE-2021-31439

DLA-3426-1

DSA-5503-1

MGASA-2022-0196

MGASA-2023-0027

SUSE-SU-2022:1184-1

SUSE-SU-2022_1184-1

USN-6146-1

ZDI-21-492

Affected Products

Alt Linux

Linuxmint

Suse

Synology Diskstation Manager

Ubuntu

References · 45

• https://ubuntu.com/security/notices/USN-6146-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2022-0196 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31439 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-492 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/678469 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-31439 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-23124 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-31439 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6146-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0194 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-23122 · Vendor Advisory
• https://debian.org/security/2023/dsa-5503 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-23121 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3426-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-45188 · Vendor Advisory