Scribus before 1.6.7 Heap Overflow via TIFF Tile Buffer Handling

Summary

Scribus before 1.6.7 contains an integer overflow vulnerability in the scimgdataloader_tiff TIFF loader that allows attackers to trigger a heap overflow via crafted tile dimensions. Attackers can supply a tiled TIFF with large tile width, height and sample values for a user to import, corrupting heap memory to crash Scribus or execute code.

Remediation

1. Inventory every Scribus Scribus deployment, including staging.
2. Upgrade Scribus Scribus to the fixed version for your release line, listed under Affected versions.
3. Confirm the running version after the upgrade.

References

• Patchhttps://github.com/scribusproject/scribus/commit/b3e2be4e0f4063991c0b3af1c1447218ed33f0cc
• Patchhttps://github.com/scribusproject/scribus/commit/57ebf70d503eef7124fcfba0e6222ea4d80675d2
• Advisoryhttps://www.vulncheck.com/advisories/scribus-before-1.6.7-heap-overflow-via-tiff-tile-buffer-handling
• Referencehttps://github.com/scribusproject/scribus
• Referencehttps://wiki.scribus.net/canvas/1.6.7_Release