Vulnerability in BentoML

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

BentoML through 1.4.39 contains a Dockerfile instruction injection vulnerability that allows attackers to add arbitrary build instructions by embedding newlines in docker.env mapping keys rendered by the legacy base.j2 template. Attackers can supply a crafted bentofile.yaml or imported bento archive so that bentoml containerize executes injected RUN instructions during docker build, accessing build secrets and poisoning images.

[ 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/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/bento/build_config.py
• github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/__init__.py
• github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/frontend/docker…
• github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/generate.py
• github.com/geo-chen/oss/blob/main/BentoML.md
• www.vulncheck.com/advisories/bentoml-through-1.4.39-dockerfile-instruction-injection-vi…