OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point.
In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.
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 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openexr Openexr
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
|
3.4.0
|
3.4.7
|
References 3
https://github.com/AcademySoftwareFoundation/openexr/commit/3827998f5c041d6a94c…
security-advisories@github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.7
security-advisories@github.com
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-g…
security-advisories@github.com