MapServer is a system for developing web-based GIS applications. Starting in version 4.2 and prior to version 8.6.1, a heap-buffer-overflow write in MapServer’s SLD (Styled Layer Descriptor) parser lets a remote, unauthenticated attacker crash the MapServer process by sending a crafted SLD with more than 100 Threshold elements inside a ColorMap/Categorize structure (commonly reachable via WMS GetMap with SLD_BODY). Version 8.6.1 patches the issue.
| Vendor | Product | Versions |
|---|---|---|
| mapserver | mapserver | >= 4.2, < 8.6.1, < 8.6.1 |
Updated severity to CRITICAL, affected versions to < 8.6.1, and noted that no exploit exists.
Initial creation
