High advisory for Scribus

Advisory overview

Scribus before 1.6.7 contains a heap buffer overflow vulnerability in the Mac PICT image loader and import plugin when unpacking 4-bit indexed pixel data. Attackers can supply a crafted PICT file with inconsistent width and row data that, when placed or imported, writes out of bounds, causing crashes or code execution.

Related references

• https://github.com/scribusproject/scribus
• https://github.com/scribusproject/scribus/commit/d667b3b1d38e1808721315dc976d67b72070f6b4
• https://wiki.scribus.net/canvas/1.6.7_Release
• https://www.vulncheck.com/advisories/scribus-before-1.6.7-heap-buffer-overflow-via-pict-4-bit-pixel-unpacking