FKIE_CVE-2021-22897

Vulnerability from fkie_nvd - Published: 2021-06-11 16:15 - Updated: 2026-10-14 11:16
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single "static" variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly.
References
support@hackerone.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
support@hackerone.comhttps://curl.se/docs/CVE-2021-22897.htmlPatch, Vendor Advisory
support@hackerone.comhttps://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511Patch, Third Party Advisory
support@hackerone.comhttps://hackerone.com/reports/1172857Exploit, Issue Tracking, Third Party Advisory
support@hackerone.comhttps://security.netapp.com/advisory/ntap-20210727-0007/Third Party Advisory
support@hackerone.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
support@hackerone.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
support@hackerone.comhttps://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://curl.se/docs/CVE-2021-22897.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1172857Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210727-0007/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-389290.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
134c704f-9b21-4f2e-91b3-4a467353bcc0https://hackerone.com/reports/1172857Exploit, Issue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
haxx curl *
oracle communications_cloud_native_core_binding_support_function 1.11.0
oracle communications_cloud_native_core_network_function_cloud_native_environment 1.10.0
oracle communications_cloud_native_core_network_repository_function 1.15.0
oracle communications_cloud_native_core_network_repository_function 1.15.1
oracle communications_cloud_native_core_network_slice_selection_function 1.8.0
oracle communications_cloud_native_core_service_communication_proxy 1.15.0
oracle essbase *
oracle essbase *
oracle mysql_server *
oracle mysql_server *
netapp cloud_backup -
netapp solidfire\,_enterprise_sds_\&_hci_storage_node -
netapp solidfire_\&_hci_management_node -
netapp solidfire_baseboard_management_controller_firmware -
netapp hci_compute_node_firmware -
netapp hci_compute_node -
netapp h300e_firmware -
netapp h300e -
netapp h300s_firmware -
netapp h300s -
netapp h410s_firmware -
netapp h410s -
netapp h500e_firmware -
netapp h500e -
netapp h500s_firmware -
netapp h500s -
netapp h700e_firmware -
netapp h700e -
netapp h700s_firmware -
netapp h700s -
siemens sinec_infrastructure_network_services *
splunk universal_forwarder *
splunk universal_forwarder *
splunk universal_forwarder 9.1.0
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single \"static\" variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly."
    },
    {
      "lang": "es",
      "value": "curl versiones 7.61.0 hasta 7.76.1, sufre de exposici\u00f3n de un elemento de datos a una sesi\u00f3n equivocada debido a un error en el c\u00f3digo para la funci\u00f3n CURLOPT_SSL_CIPHER_LIST cuando libcurl es constru\u00eddo para usar la biblioteca TLS de Schannel. El ajuste de cifrado seleccionado se almacenaba en una \u00fanica variable \"static\" en la biblioteca, lo que tiene el sorprendente efecto secundario de que si una aplicaci\u00f3n establece m\u00faltiples transferencias concurrentes, la \u00faltima que ajusta los cifrados controlar\u00e1 accidentalmente el ajuste usado por todas las transferencias. En el peor de los casos, esto debilita significativamente la seguridad del transporte"
    }
  ],
  "id": "CVE-2021-22897",
  "lastModified": "2026-10-14T11:16:52.620",
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        "obtainAllPrivilege": false,
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-22897",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-28T19:47:49.058767Z",
          "version": "2.0.3"
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  "published": "2021-06-11T16:15:10.963",
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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