Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
CVSS breakdown
CVSS 4.0
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
None
Integrity (Vulnerable System)
None
Availability (Vulnerable System)
Low
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
E
Physical
Affected products
- AcademySoftwareFoundation / openexr>= 3.3.0, < 3.3.6 – >= 3.3.0, < 3.3.6
- AcademySoftwareFoundation / openexr>= 3.4.0, < 3.4.3 – >= 3.4.0, < 3.4.3
References
- VENDOR_ADVISORYhttps://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3h9h-qfvw-98hq
- MISChttps://github.com/user-attachments/files/23024726/archive0.zip
- MISChttps://github.com/user-attachments/files/23024736/archive1.zip
- MISChttps://github.com/user-attachments/files/23024740/archive2.zip
- MISChttps://github.com/user-attachments/files/23024744/archive3.zip
- MISChttps://github.com/user-attachments/files/23024746/archive4.zip