CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
64.4%
cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. cosign verify-attestation
used with the --type
flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (–type defaults to “custom”). This can happen when signing with a standard keypair and with “keyless” signing with Fulcio. This vulnerability can be reproduced with the distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2
image. This image has a vuln
attestation but not an spdx
attestation. However, if you run cosign verify-attestation --type=spdx
on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue.
[
{
"product": "cosign",
"vendor": "sigstore",
"versions": [
{
"status": "affected",
"version": "< 1.10.1"
}
]
}
]
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