High advisory for FreeRDP

Advisory overview

FreeRDP before 3.32.2 has a heap out-of-bounds write in the planar codec because freerdp_bitmap_planar_context_reset commits new dimensions before buffer reallocation succeeds, and a failed ResetGraphics is only logged. A malicious RDP server can send an oversized ResetGraphics PDU, then a GFX PLANAR command, to corrupt client heap memory and crash the client.

Related references

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fg78-v8j5-8697
• https://www.vulncheck.com/advisories/freerdp-before-3.32.2-heap-out-of-bounds-write-in-planar-codec
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fg78-v8j5-8697