OPENSUSE-SU-2026:20386-1

Vulnerability from csaf_opensuse - Published: 2026-03-18 11:29 - Updated: 2026-03-18 11:29
Summary
Security update for cosign
Severity
Moderate
Notes
Title of the patch: Security update for cosign
Description of the patch: This update for cosign fixes the following issues: Update to version 3.0.5: - CVE-2026-24122: Fixed improper validation of certificates that outlive expired CA certificates (bsc#1258542) - CVE-2026-26958: Fixed filippo.io/edwards25519: failure to initialize receiver in MultiScalarMult can produce invalid results and lead to undefined behavior (bsc#1258612) - CVE-2026-24137: Fixed github.com/sigstore/sigstore/pkg/tuf: legacy TUF client allows for arbitrary file writes with target cache path traversal (bsc#1257139) - CVE-2026-22772: Fixed github.com/sigstore/fulcio: bypass MetaIssuer URL validation bypass can trigger SSRF to arbitrary internal services (bsc#1256562) - CVE-2026-23991: Fixed github.com/theupdateframework/go-tuf/v2: denial of service due to invalid TUF metadata JSON returned by TUF repository (bsc#1257080) - CVE-2026-23992: Fixed github.com/theupdateframework/go-tuf/v2: unauthorized modification to TUF metadata files due to a compromised or misconfigured TUF repository (bsc#1257085) - CVE-2025-11065: Fixed github.com/go-viper/mapstructure/v2: sensitive Information leak in logs (bsc#1250620) - CVE-2026-22703: Fixed that cosign verification accepts any valid Rekor entry under certain conditions (bsc#1256496) - CVE-2025-58181: Fixed golang.org/x/crypto/ssh: invalidated number of mechanisms can cause unbounded memory consumption (bsc#1253913)
Patchnames: openSUSE-Leap-16.0-404
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
https://www.suse.com/support/security/rating/ external
https://ftp.suse.com/pub/projects/security/csaf/o… self
https://bugzilla.suse.com/1250620 self
https://bugzilla.suse.com/1253913 self
https://bugzilla.suse.com/1256496 self
https://bugzilla.suse.com/1256562 self
https://bugzilla.suse.com/1257080 self
https://bugzilla.suse.com/1257085 self
https://bugzilla.suse.com/1257139 self
https://bugzilla.suse.com/1258542 self
https://bugzilla.suse.com/1258612 self
https://www.suse.com/security/cve/CVE-2025-11065/ self
https://www.suse.com/security/cve/CVE-2025-58181/ self
https://www.suse.com/security/cve/CVE-2026-22703/ self
https://www.suse.com/security/cve/CVE-2026-22772/ self
https://www.suse.com/security/cve/CVE-2026-23991/ self
https://www.suse.com/security/cve/CVE-2026-23992/ self
https://www.suse.com/security/cve/CVE-2026-24122/ self
https://www.suse.com/security/cve/CVE-2026-24137/ self
https://www.suse.com/security/cve/CVE-2026-26958/ self
https://www.suse.com/security/cve/CVE-2025-11065 external
https://bugzilla.suse.com/1250608 external
https://www.suse.com/security/cve/CVE-2025-58181 external
https://bugzilla.suse.com/1253784 external
https://www.suse.com/security/cve/CVE-2026-22703 external
https://bugzilla.suse.com/1256496 external
https://www.suse.com/security/cve/CVE-2026-22772 external
https://bugzilla.suse.com/1256532 external
https://www.suse.com/security/cve/CVE-2026-23991 external
https://bugzilla.suse.com/1257079 external
https://www.suse.com/security/cve/CVE-2026-23992 external
https://bugzilla.suse.com/1257084 external
https://www.suse.com/security/cve/CVE-2026-24122 external
https://bugzilla.suse.com/1258540 external
https://www.suse.com/security/cve/CVE-2026-24137 external
https://bugzilla.suse.com/1257137 external
https://www.suse.com/security/cve/CVE-2026-26958 external
https://bugzilla.suse.com/1258570 external

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          "text": "https://www.suse.com/security/cve/CVE-2026-24137"
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          "category": "general",
          "text": "sigstore framework is a common go library shared across sigstore services and clients. In versions 1.10.3 and below, the legacy TUF client (pkg/tuf/client.go) supports caching target files to disk. It constructs a filesystem path by joining a cache base directory with a target name sourced from signed target metadata; however, it does not validate that the resulting path stays within the cache base directory. A malicious TUF repository can trigger arbitrary file overwriting, limited to the permissions that the calling process has. Note that this should only affect clients that are directly using the TUF client in sigstore/sigstore or are using an older version of Cosign. Public Sigstore deployment users are unaffected, as TUF metadata is validated by a quorum of trusted collaborators. This issue has been fixed in version 1.10.4. As a workaround, users can disable disk caching for the legacy client by setting SIGSTORE_NO_CACHE=true in the environment, migrate to https://github.com/sigstore/sigstore-go/tree/main/pkg/tuf, or upgrade to the latest sigstore/sigstore release.",
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          "text": "https://www.suse.com/security/cve/CVE-2026-26958"
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        {
          "category": "general",
          "text": "filippo.io/edwards25519 is a Go library implementing the edwards25519 elliptic curve with APIs for building cryptographic primitives. In versions 1.1.0 and earlier, MultiScalarMult produces invalid results or undefined behavior if the receiver is not the identity point. If (*Point).MultiScalarMult is called on an initialized point that is not the identity point, it returns an incorrect result. If the method is called on an uninitialized point, the behavior is undefined. In particular, if the receiver is the zero value, MultiScalarMult returns an invalid point that compares Equal to every other point. Note that MultiScalarMult is a rarely used, advanced API. For example, users who depend on filippo.io/edwards25519 only through github.com/go-sql-driver/mysql are not affected. This issue has been fixed in version 1.1.1.",
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  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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