ghsa-5cwr-528x-3vwc
Vulnerability from github
Published
2022-05-24 17:46
Modified
2024-03-27 18:32
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Details

curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.

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{
   affected: [],
   aliases: [
      "CVE-2021-22890",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-290",
         "CWE-300",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-04-01T18:15:00Z",
      severity: "MODERATE",
   },
   details: "curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly \"short-cut\" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.",
   id: "GHSA-5cwr-528x-3vwc",
   modified: "2024-03-27T18:32:37Z",
   published: "2022-05-24T17:46:04Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-22890",
      },
      {
         type: "WEB",
         url: "https://hackerone.com/reports/1129529",
      },
      {
         type: "WEB",
         url: "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
      },
      {
         type: "WEB",
         url: "https://curl.se/docs/CVE-2021-22890.html",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/202105-36",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20210521-0007",
      },
      {
         type: "WEB",
         url: "https://www.oracle.com//security-alerts/cpujul2021.html",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
         type: "CVSS_V3",
      },
   ],
}


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