OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store.
This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Active
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openexr Openexr
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
|
3.2.0
|
3.2.7
|
|
Openexr Openexr
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
|
3.3.0
|
3.3.9
|
|
Openexr Openexr
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
|
3.4.0
|
3.4.9
|
References 4
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7
security-advisories@github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9
security-advisories@github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9
security-advisories@github.com
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p…
security-advisories@github.com