Vulnerability-Lookup

SUSE-SU-2022:2877-1

Vulnerability from csaf_suse - Published: 2022-08-23 11:31 - Updated: 2022-08-23 11:31

Summary

Security update for cosign

Severity

Important

Notes

Title of the patch: Security update for cosign

Description of the patch: This update for cosign fixes the following issues: - Updated to 1.10.1 (jsc#SLE-23879): - CVE-2022-35929: Fixed an issue where cosign verify-attestation --type could report false positives when there was at least one attestation with a valid signature and there were no attestations of the type being verified (bsc#1202157).

Patchnames: SUSE-2022-2877,SUSE-SLE-Module-Basesystem-15-SP4-2022-2877,openSUSE-SLE-15.4-2022-2877

CVE-2022-35929

6.2 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

Recommended 8 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP4:cosign-1.10.1-150400.3.3.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP4:cosign-1.10.1-150400.3.3.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP4:cosign-1.10.1-150400.3.3.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP4:cosign-1.10.1-150400.3.3.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.4:cosign-1.10.1-150400.3.3.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.4:cosign-1.10.1-150400.3.3.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.4:cosign-1.10.1-150400.3.3.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.4:cosign-1.10.1-150400.3.3.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1202157	self
https://www.suse.com/security/cve/CVE-2022-35929/	self
https://www.suse.com/security/cve/CVE-2022-35929	external
https://bugzilla.suse.com/1202157	external

JSON

To clipboard

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CVE-2022-35929 (GCVE-0-2022-35929)

Vulnerability from cvelistv5 – Published: 2022-08-04 18:45 – Updated: 2025-04-22 17:43

Title

False positive signature verification in cosign

Summary

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.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:42 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/sigstore/cosign/security/advis…	x_refsource_CONFIRM
https://github.com/sigstore/cosign/commit/c5fda01…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sigstore	cosign	Affected: < 1.10.1

Show details on NVD website

JSON

To clipboard

{
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T09:51:59.114Z",
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            "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
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            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-04T18:45:14.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94"
        }
      ],
      "source": {
        "advisory": "GHSA-vjxv-45g9-9296",
        "discovery": "UNKNOWN"
      },
      "title": "False positive signature verification in cosign",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-35929",
          "STATE": "PUBLIC",
          "TITLE": "False positive signature verification in cosign"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "cosign",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.10.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "sigstore"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-347: Improper Verification of Cryptographic Signature"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296",
              "refsource": "CONFIRM",
              "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296"
            },
            {
              "name": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94",
              "refsource": "MISC",
              "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-vjxv-45g9-9296",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-35929",
    "datePublished": "2022-08-04T18:45:14.000Z",
    "dateReserved": "2022-07-15T00:00:00.000Z",
    "dateUpdated": "2025-04-22T17:43:02.289Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.