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Fix CVE-2024-3727 #2403

Merged
merged 4 commits into from
May 9, 2024
Merged

Fix CVE-2024-3727 #2403

merged 4 commits into from
May 9, 2024

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mtrmac
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@mtrmac mtrmac commented May 9, 2024

Digest values used throughout this library were not always validated. That allowed attackers to trigger, when pulling untrusted images, unexpected authenticated registry accesses on behalf of a victim user.

In less common uses of this library (using other transports or not using the containers/image/v5/copy.Image API), an attacker could also trigger local path traversals or crashes.

mtrmac added 4 commits May 9, 2024 15:59
If doing it makes sense at all, it should happen before
the values are used.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
... to prevent panics if the value does not contain a :, or other unexpected
values (e.g. a path traversal).

Don't bother on paths where we computed the digest ourselves, or it is already trusted
for other reasons.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
... to prevent unexpected behavior on invalid values.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
Signed-off-by: Miloslav Trmač <mitr@redhat.com>
@mheon
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mheon commented May 9, 2024

LGTM

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2 participants