Vulnerabilities > CVE-2021-27647 - Out-of-bounds Read vulnerability in Synology Diskstation Manager

CVSS 9.8 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

synology

CWE-125

critical

NVD

Published: 2021-03-12

Updated: 2024-11-21

Summary

Out-of-bounds Read vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.

Vulnerable Configurations

Part	Description	Count
Application	Synology Synology Diskstation Manager - Synology Diskstation Manager 3.0 Synology Diskstation Manager 4.0 Synology Diskstation Manager 4.0-2259 Synology Diskstation Manager 4.2 Synology Diskstation Manager 4.2-3243 Synology Diskstation Manager 4.3 Synology Diskstation Manager 4.3-3810 Synology Diskstation Manager 5.2 Synology Diskstation Manager 5.2-5565 Synology Diskstation Manager 5.2-5565-1 Synology Diskstation Manager 5.2-5565-2 Synology Diskstation Manager 5.2-5592 Synology Diskstation Manager 5.2-5592-1 Synology Diskstation Manager 5.2-5592-2 Synology Diskstation Manager 5.2-5592-3 Synology Diskstation Manager 5.2-5592-4 Synology Diskstation Manager 5.2-5620 Synology Diskstation Manager 5.2-5644 Synology Diskstation Manager 5.2-5644-1 Synology Diskstation Manager 5.2-5644-2 Synology Diskstation Manager 5.2-5644-3 Synology Diskstation Manager 5.2-5644-5 Synology Diskstation Manager 5.2-5644-8 Synology Diskstation Manager 5.2-5967 Synology Diskstation Manager 5.2-5967-1 Synology Diskstation Manager 5.2-5967-2 Synology Diskstation Manager 5.2-5967-3 Synology Diskstation Manager 5.2-5967-4 Synology Diskstation Manager 5.2-5967-5 Synology Diskstation Manager 5.2-5967-6 Synology Diskstation Manager 5.2-5967-7 Synology Diskstation Manager 5.2-5967-8 Synology Diskstation Manager 5.2-5967-9 Synology Diskstation Manager 6.0 Synology Diskstation Manager 6.0-7321 Synology Diskstation Manager 6.0-7321-1 Synology Diskstation Manager 6.0-7321-2 Synology Diskstation Manager 6.0-7321-3 Synology Diskstation Manager 6.0-7321-5 Synology Diskstation Manager 6.0-7321-6 Synology Diskstation Manager 6.0.1-7393 Synology Diskstation Manager 6.0.1-7393-1 Synology Diskstation Manager 6.0.1-7393-2 Synology Diskstation Manager 6.0.2-8451 Synology Diskstation Manager 6.0.2-8451-1 Synology Diskstation Manager 6.0.2-8451-2 Synology Diskstation Manager 6.0.2-8451-3 Synology Diskstation Manager 6.0.2-8451-4 Synology Diskstation Manager 6.0.2-8451-5 Synology Diskstation Manager 6.0.2-8451-6 Synology Diskstation Manager 6.0.2-8451-7 Synology Diskstation Manager 6.0.2-8451-8 Synology Diskstation Manager 6.0.2-8451-9 Synology Diskstation Manager 6.0.2-8451-10 Synology Diskstation Manager 6.0.3-8754 Synology Diskstation Manager 6.0.3-8754-1 Synology Diskstation Manager 6.0.3-8754-3 Synology Diskstation Manager 6.0.3-8754-4 Synology Diskstation Manager 6.0.3-8754-8 Synology Diskstation Manager 6.1 Synology Diskstation Manager 6.1-15047 Synology Diskstation Manager 6.1-15047-1 Synology Diskstation Manager 6.1-15047-2 Synology Diskstation Manager 6.1.1 Synology Diskstation Manager 6.1.1-15101 Synology Diskstation Manager 6.1.1-15101-1 Synology Diskstation Manager 6.1.1-15101-2 Synology Diskstation Manager 6.1.1-15101-3 Synology Diskstation Manager 6.1.1-15101-4 Synology Diskstation Manager 6.1.2-15132 Synology Diskstation Manager 6.1.2-15132-1 Synology Diskstation Manager 6.1.3-15152 Synology Diskstation Manager 6.1.3-15152-1 Synology Diskstation Manager 6.1.3-15152-3 Synology Diskstation Manager 6.1.3-15152-4 Synology Diskstation Manager 6.1.3-15152-5 Synology Diskstation Manager 6.1.3-15152-6 Synology Diskstation Manager 6.1.3-15152-7 Synology Diskstation Manager 6.1.3-15152-8 Synology Diskstation Manager 6.1.4-15217 Synology Diskstation Manager 6.1.4-15217-1 Synology Diskstation Manager 6.1.4-15217-2 Synology Diskstation Manager 6.1.4-15217-3 Synology Diskstation Manager 6.1.4-15217-4 Synology Diskstation Manager 6.1.4-15217-5 Synology Diskstation Manager 6.1.6-15266 Synology Diskstation Manager 6.1.7-15284 Synology Diskstation Manager 6.1.7-15284-1 Synology Diskstation Manager 6.1.7-15284-2 Synology Diskstation Manager 6.1.7-15284-3 Synology Diskstation Manager 6.2 Synology Diskstation Manager 6.2-23739 Synology Diskstation Manager 6.2-23739-1 Synology Diskstation Manager 6.2-23739-2 Synology Diskstation Manager 6.2.1 Synology Diskstation Manager 6.2.1-23824 Synology Diskstation Manager 6.2.1-23824-1 Synology Diskstation Manager 6.2.1-23824-2 Synology Diskstation Manager 6.2.1-23824-3 Synology Diskstation Manager 6.2.1-23824-4 Synology Diskstation Manager 6.2.1-23824-5 Synology Diskstation Manager 6.2.1-23824-6 Synology Diskstation Manager 6.2.2-24922 Synology Diskstation Manager 6.2.3-25426-2	106

Common Weakness Enumeration (CWE)

CWE-125 - Out-of-bounds Read

Common Attack Pattern Enumeration and Classification (CAPEC)

Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References