{
  "cveId": "CVE-2020-13777",
  "url": "https://patchblox.com/security/cve/CVE-2020-13777",
  "summary": "CVE-2020-13777 is fixed in 11 products on 1 platform, first by gnutls-bin 3.6.13-2ubuntu1.1, released June 4, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "gnutls: The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorit...",
  "description": "The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.\n\nSecurity Fix(es):\n\n* gnutls: session resumption works without master key allowing MITM (CVE-2020-13777)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2020-06-04T00:15:00Z",
  "severity": "Important",
  "cvss": 7.4,
  "epss": 0.22455,
  "epssPercentile": 0.97715,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "gnutls",
      "release": "RHEL 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "RHSA-2020:2637",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls",
      "release": "ol 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "ELSA-2020-2637",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-bin",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "gnutls-bin 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-gnutls-bin-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-c\u002B\u002B",
      "release": "RHEL 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "RHSA-2020:2637",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-c\u002B\u002B",
      "release": "ol 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "ELSA-2020-2637",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-dane",
      "release": "RHEL 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "RHSA-2020:2637",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-dane",
      "release": "ol 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "ELSA-2020-2637",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "RHSA-2020:2637",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-devel",
      "release": "ol 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "ELSA-2020-2637",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-utils",
      "release": "RHEL 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "RHSA-2020:2637",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gnutls-utils",
      "release": "ol 8",
      "fixedVersion": "0:3.6.8-11.el8_2",
      "fix": "ELSA-2020-2637",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2637",
      "released": "2020-06-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "guile-gnutls",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "guile-gnutls 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-guile-gnutls-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libgnutls-dane0",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "libgnutls-dane0 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libgnutls-dane0-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libgnutls-openssl27",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "libgnutls-openssl27 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libgnutls-openssl27-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libgnutls30",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "libgnutls30 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libgnutls30-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libgnutlsxx28",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.13-2ubuntu1.1",
      "fix": "libgnutlsxx28 3.6.13-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libgnutlsxx28-3.6.13-2ubuntu1.1",
      "released": "2020-06-04T00:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}