CVE-2021-26236

FastStone Image Viewer v.<= 7.5 is affected by a Stack-based Buffer Overflow at 0x005BDF49, affecting the CUR file parsing functionality (BITMAPINFOHEADER Structure, 'BitCount' file format field), that will end up corrupting the Structure Exception Handler (SEH). Attackers could exploit this issue to achieve code execution when a user opens or views a malformed/specially crafted CUR file.

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3.0 : 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/fuzzing-faststone-image-viewer-cve-2021-26236	Exploit Third Party Advisory
https://www.exploit-db.com/exploits/49660	Exploit Third Party Advisory VDB Entry
https://voidsec.com/advisories/cve-2021-26236-faststone-image-viewer-v-7-5-stack-based-buffer-overflow/	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-03-18 06:15

Updated : 2021-03-23 18:19

NVD link : CVE-2021-26236

Mitre link : CVE-2021-26236

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

faststone

image_viewer

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