FastStone Image Viewer up to 7.5 CUR File FSViewer.exe memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability, which was classified as critical, was found in FastStone Image Viewer up to 7.5. Affected is an unknown part of the file FSViewer.exe of the component CUR File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 03/19/2021. The advisory is available at voidsec.com. This vulnerability is traded as CVE-2021-26233. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Vendor

Name

License

  • free

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/25/2021 🔍
03/19/2021 +53 days 🔍
03/19/2021 +0 days 🔍
04/02/2021 +14 days 🔍

Sourcesinfo

Advisory: voidsec.com
Status: Not defined

CVE: CVE-2021-26233 (🔍)

Entryinfo

Created: 03/19/2021 07:02 AM
Updated: 04/02/2021 06:39 PM
Changes: 03/19/2021 07:02 AM (37), 04/02/2021 06:36 PM (2), 04/02/2021 06:39 PM (18)
Complete: 🔍

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