Image Version Not Explicit

Query id: 9efb0b2d-89c9-41a3-91ca-dcc0aec911fd
Query name: Image Version Not Explicit
Platform: Dockerfile
Severity: Medium
Category: Supply-Chain
CWE: 1357
URL: Github

Description¶

Always tag the version of an image explicitly
Documentation

Code samples¶

Code samples with security vulnerabilities¶

Positive test num. 1 - dockerfile file

FROM alpine
RUN apk add --update py2-pip
RUN pip install --upgrade pip
COPY requirements.txt /usr/src/app/
RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt
COPY app.py /usr/src/app/
COPY templates/index.html /usr/src/app/templates/
EXPOSE 5000
CMD ["python", "/usr/src/app/app.py"]

Positive test num. 2 - dockerfile file

FROM ubuntu:22.04 AS test
RUN echo "hello"

FROM test AS build
RUN echo "build"

FROM construction AS final
RUN echo "final"

Positive test num. 3 - dockerfile file

FROM ubuntu:22.04 AS test
RUN echo "hello"

FROM positive4 
RUN echo "positive4"

FROM positive42
RUN echo "positive42"

Positive test num. 4 - dockerfile file

FROM ubuntu:22.04 AS test1
RUN echo "depth"

FROM test1 AS test2
RUN echo "depth"

FROM test_fail_1
RUN echo "depth"

FROM test3 AS test_fail_2
RUN echo "depth"

FROM test2 AS test3
RUN echo "depth"

FROM test3 AS test_fail_1
RUN echo "depth"

Code samples without security vulnerabilities¶

Negative test num. 1 - dockerfile file

FROM alpine:3.5
RUN apk add --update py2-pip
RUN pip install --upgrade pip
COPY requirements.txt /usr/src/app/
RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt
COPY app.py /usr/src/app/
COPY templates/index.html /usr/src/app/templates/
EXPOSE 5000
ARG IMAGE=alpine:3.12
FROM $IMAGE
CMD ["python", "/usr/src/app/app.py"]

Negative test num. 2 - dockerfile file

FROM ubuntu:22.04 AS test
RUN echo "hello"

FROM test AS build
RUN echo "build"

FROM build AS final
RUN echo "final"

Negative test num. 3 - dockerfile file

FROM ubuntu@sha256:b59d21599a2b151e23eea5f6602f4af4d7d31c4e236d22bf0b62b86d2e386b8f as base
RUN echo "base"

FROM base
RUN echo "stage1"

Negative test num. 4 - dockerfile file

FROM ubuntu:22.04 AS test1
RUN echo "depth1"

FROM test1 AS test2
RUN echo "depth2"

FROM test2 AS test3
RUN echo "depth3"

FROM test3 AS test4
RUN echo "depth4"

FROM test4 
RUN echo "depth5"