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SUSE-SU-2026:2365-1

Опубликовано: 11 июн. 2026
Источник: suse-cvrf

Описание

Security update for cosign

This update for cosign fixes the following issue

  • CVE-2026-39395: Incorrect attestation verification due to malformed payloads or mismatched predicate types (bsc#1261859).

Changes for cosign:

  • update to 3.0.6:
  • Fix DSSE predicate check (GHSA-w6c6-c85g-mmv6) (#4801)
  • Handle whitespace-only certificate annotation (#4760)
  • fix(sign): closing SignerVerifier too early when signing with a security key (#4761)
  • Disallow --new-bundle-format and --rfc3161-timestamp (#4762)
  • support managed keys in conformance testing (#4728)
  • Add support for GCE metadata server env var (#4732)
  • fix: preserve per-layer annotations in WriteAttestationsReferrer (#4709)
  • Fix parsing of in-toto for string predicates
  • Mark batch of flags for deprecation (#4698)
  • disallow key and cert identity being used together during verification (#4636)
  • support key creation in GitLab group (#4704)
  • Set CGO_ENABLED=1 for fixing s390x failed build
  • build against a maintained golang version (upstream uses go1.20)

Список пакетов

SUSE Linux Enterprise Module for Basesystem 15 SP7
cosign-3.0.6-150400.3.42.1
cosign-bash-completion-3.0.6-150400.3.42.1
cosign-zsh-completion-3.0.6-150400.3.42.1

Ссылки

Описание

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures, this was due to a logic flaw in the error handling of the predicate type validation. For new-format bundles, the predicate type validation was bypassed completely. This vulnerability is fixed in 3.0.6 and 2.6.3.

Затронутые продукты
SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-3.0.6-150400.3.42.1
SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-bash-completion-3.0.6-150400.3.42.1
SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-zsh-completion-3.0.6-150400.3.42.1
Ссылки