Synology DiskStation Manager up to 6.2.3-25423 Thread iscsi_snapshot_comm_core race condition

CVSS Meta Temp Score
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CTI Interest Score
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8.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Synology DiskStation Manager. This affects the function iscsi_snapshot_comm_core of the component Thread Handler. Such manipulation leads to race condition. This vulnerability is documented as CVE-2021-26569. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Synology DiskStation Manager (Network Attached Storage Software). It has been rated as critical. Affected by this issue is the function iscsi_snapshot_comm_core of the component Thread Handler. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability.

The weakness was released 03/12/2021 as SA_20_26. The advisory is available at synology.com. This vulnerability is handled as CVE-2021-26569. Technical details are known, but there is no available exploit.

Upgrading to version 6.2.3-25426-3 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Synology Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DiskStation Manager 6.2.3-25426-3

Timelineinfo

02/02/2021 🔍
03/12/2021 +38 days 🔍
03/12/2021 +0 days 🔍
01/15/2025 +1405 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_20_26
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-26569 (🔍)
GCVE (CVE): GCVE-0-2021-26569
GCVE (VulDB): GCVE-100-171206

Entryinfo

Created: 03/12/2021 13:38
Updated: 01/15/2025 07:16
Changes: 03/12/2021 13:38 (39), 03/31/2021 23:57 (6), 04/01/2021 00:00 (19), 01/15/2025 07:16 (27)
Complete: 🔍
Cache ID: 216::103

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