imgproxy has out-of-bounds heap read/write in ICO loader BMP header reconstruction that allows unauthenticated remote worker crash

Summary Out-of-bounds heap write in imgproxy's ICO loader vips/icoload.c: when the ICO entry's image data buffer is small, the loader's BMP-header-reconstruction writes land past the allocation, corrupting the size field of the following heap chunk. The worker then aborts deterministically glibc...

imgproxy has unbounded memory allocation in ICO loader that allows unauthenticated memory-exhaustion DoS via crafted data_size field

Summary Unbounded and unvalidated memory allocation in imgproxy's ICO loader vips/icoload.c. An attacker-controlled datasize field u32 from the ICO directory entry is passed directly to VIPSMALLOC without any bounds check, so a single crafted 23-byte ICO file makes an imgproxy worker attempt a 4G...