CVE-2021-34558 (GCVE-0-2021-34558)

Vulnerability from cvelistv5 – Published: 2021-07-15 13:47 – Updated: 2024-08-04 00:12
VLAI
Summary
The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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{\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXJ2MVMAHOIGRH37ZSFYC4EVWLJFL2EQ/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.gentoo.org/glsa/202208-02\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210813-0005/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2022.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2021.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-295\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2021-07-31T00:00:00.000Z",
      "cve": "CVE-2021-34558",
      "id": "msrc_CVE-2021-34558",
      "initial_release_date": "2021-07-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange allowing a malicious TLS server to cause a TLS client to panic.",
      "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-34558.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-34558\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-07-15T14:15:19.660\",\"lastModified\":\"2024-11-21T06:10:40.993\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.\"},{\"lang\":\"es\",\"value\":\"El paquete crypto/tls de Go versiones hasta 1.16.5, no afirma apropiadamente que el tipo de clave p\u00fablica en un certificado X.509 coincida con el tipo esperado cuando se hace un intercambio de claves basado en RSA, permitiendo a un servidor TLS malicioso causar el p\u00e1nico en un cliente TLS\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:H/Au:N/C:N/I:N/A:P\",\"baseScore\":2.6,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"HIGH\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":4.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-295\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.15.14\",\"matchCriteriaId\":\"D4C75B08-37AB-4BF9-8DAA-0E4479E5EB43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.16.0\",\"versionEndExcluding\":\"1.16.6\",\"matchCriteriaId\":\"EEAF2DA1-11A7-4A2B-A05A-26FD7E80805C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:cloud_insights_telegraf:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F7E26C3B-E416-49D6-B296-33CD93694D39\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8ADFF451-740F-4DBA-BD23-3881945D3E40\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:trident:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5D9A34F5-AC03-4098-A37D-AD50727DDB11\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"21.1.1.1.0\",\"matchCriteriaId\":\"20290BBC-E3C9-4B96-94FE-2DFADD4BF1F1\"}]}]}],\"references\":[{\"url\":\"https://golang.org/doc/devel/release#go1.16.minor\",\"source\":\"cve@mitre.org\",\"tags\":[\"Release 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T12:01:02+00:00",
      "cve": "CVE-2021-34558",
      "id": "CVE-2021-34558",
      "initial_release_date": "2021-07-13T00:00:00+00:00",
      "product_status:fixed": "1167",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "818",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "golang: crypto/tls: certificate of wrong type is causing TLS client to panic",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-34558.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.