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memory overflow vulnerability in OpenEXR-viewer

Critical severity GitHub Reviewed Published Dec 10, 2023 in afichet/openexr-viewer • Updated Dec 12, 2023

Package

actions afichet/openexr-viewer (GitHub Actions)

Affected versions

< 0.6.1

Patched versions

0.6.1

Description

Just open this exr file through openexr-viewer.

( poc send by email )

This is windbg log file.

[ POC 2 ]
(8660.7e44): Access violation - code c0000005 (!!! second chance !!!)
openexr_viewer+0x27be4:
00007ff713ff7be4 c744880c0000803f mov dword ptr [rax+rcx*4+0Ch],3F800000h ds:0000020a3ac8000c=????????

Attempt to write the value 1.0 to the memory address 0x20A3AC8000C

[ POC 1 ]
(1404.9264): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
openexr_viewer+0x27be4:
00007ff713ff7be4 c744880c0000803f mov dword ptr [rax+rcx*4+0Ch],3F800000h ds:0000029cb371600c=????????

Attempt to write the value 1.0 to the memory address 0x29CB371600C

Credits
Team : ZeroPointer
이동하 ( Lee Dong Ha of ZeroPointer Lab )
정지민    ( Jeong Jimin of ZeroPointer Lab )
박우진    ( Park Woojin of ZeroPointer Lab )
전우진    ( Jeon Woojin of ZeroPointer Lab )

References

@afichet afichet published to afichet/openexr-viewer Dec 10, 2023
Published by the National Vulnerability Database Dec 11, 2023
Published to the GitHub Advisory Database Dec 12, 2023
Reviewed Dec 12, 2023
Last updated Dec 12, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.087%
(38th percentile)

Weaknesses

CVE ID

CVE-2023-50245

GHSA ID

GHSA-99jg-r3f4-rpxj

Source code

Credits

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