CVE-2020-35843 — MEDIUM (5.5)

Vulnerability Description

FastStone Image Viewer 7.5 has an out-of-bounds write (via a crafted image file) at FSViewer.exe+0x956e.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Faststone	Image Viewer	7.5

Related Weaknesses (CWE)

CWE-787

References

https://github.com/DmitryMeD/pentesting/blob/main/FastStone%20Image%20Viewer%207ExploitThird Party Advisory
https://twitter.com/DmitriyMelikovThird Party Advisory
https://github.com/DmitryMeD/pentesting/blob/main/FastStone%20Image%20Viewer%207ExploitThird Party Advisory
https://twitter.com/DmitriyMelikovThird Party Advisory

FAQ

What is CVE-2020-35843?

CVE-2020-35843 is a vulnerability with a CVSS score of 5.5 (MEDIUM). FastStone Image Viewer 7.5 has an out-of-bounds write (via a crafted image file) at FSViewer.exe+0x956e.

How severe is CVE-2020-35843?

CVE-2020-35843 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-35843?

Check the references section above for vendor advisories and patch information. Affected products include: Faststone Image Viewer.