Vulnerability in harfbuzz

[ Description ]Official description

HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, face_create, and font_set_coords. Attackers can supply a crafted font whose embedded wasm module passes out-of-range addresses with non-zero lengths, crashing any application that shapes text with the font.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-buffer.hh
• github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-face.hh
• github.com/harfbuzz/harfbuzz/blob/14.6.0/src/hb-wasm-api-font.hh
• github.com/harfbuzz/harfbuzz/commit/a71aa86c2bac114fafb6b47f8da02024ecb44fa6
• github.com/harfbuzz/harfbuzz/pull/6414
• www.vulncheck.com/advisories/harfbuzz-8.0.0-through-14.6.0-webassembly-shaper-null-poin…