CVE-2021-26235

FastStone Image Viewer <= 7.5 is affected by a user mode write access violation near NULL at 0x005bdfc9, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://voidsec.com/advisories/cve-2021-26235-faststone-image-viewer-v-7-5-user-mode-write-access-violation/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*

History

22 Mar 2021, 18:03

Type	Values Removed	Values Added
CWE		CWE-476
CPE		cpe:2.3:a:faststone:image_viewer::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 7.8
References	~~(MISC) https://voidsec.com/advisories/cve-2021-26235-faststone-image-viewer-v-7-5-user-mode-write-access-violation/ -~~	(MISC) https://voidsec.com/advisories/cve-2021-26235-faststone-image-viewer-v-7-5-user-mode-write-access-violation/ - Third Party Advisory

18 Mar 2021, 14:24

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-03-18 14:15

Updated : 2023-12-10 13:41

NVD link : CVE-2021-26235

Mitre link : CVE-2021-26235

CVE.ORG link : CVE-2021-26235

JSON object : View

Products Affected

faststone

image_viewer

CWE

CWE-476

NULL Pointer Dereference

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