Synology DiskStation Manager up to 6.2.3-25423 HTTP Header syno_finder_site out-of-bounds write

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

Summaryinfo

A vulnerability labeled as critical has been found in Synology DiskStation Manager. Impacted is an unknown function of the component HTTP Header Handler. Such manipulation of the argument syno_finder_site leads to out-of-bounds write. This vulnerability is documented as CVE-2021-26562. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Synology DiskStation Manager (Network Attached Storage Software). Affected by this issue is an unknown part of the component HTTP Header Handler. The manipulation of the argument syno_finder_site with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 02/27/2021 as SA_20_26. The advisory is shared for download at synology.com. This vulnerability is handled as CVE-2021-26562. There are known technical details, but no exploit is available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

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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: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 9.0
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: Out-of-bounds write
CWE: CWE-787 / CWE-119
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 🔍
02/27/2021 +25 days 🔍
02/27/2021 +0 days 🔍
01/15/2025 +1418 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_20_26
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-26562 (🔍)
GCVE (CVE): GCVE-0-2021-26562
GCVE (VulDB): GCVE-100-170516

Entryinfo

Created: 02/27/2021 08:16
Updated: 01/15/2025 07:16
Changes: 02/27/2021 08:16 (40), 03/05/2021 20:50 (6), 03/05/2021 20:54 (1), 03/14/2021 07:08 (16), 01/15/2025 07:16 (27)
Complete: 🔍
Cache ID: 216::103

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