{
  "cveId": "CVE-2017-7805",
  "url": "https://patchblox.com/security/cve/CVE-2017-7805",
  "summary": "CVE-2017-7805 is fixed in 14 products on 1 platform, first by libnss3 2:3.32-1ubuntu3, released September 28, 2017. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "firefox: During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer",
  "description": "During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox \u0026lt; 56, Firefox ESR \u0026lt; 52.4, and Thunderbird \u0026lt; 52.4.",
  "published": "2017-09-28T17:00:00Z",
  "severity": "Medium",
  "epss": 0.0305,
  "epssPercentile": 0.87621,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "56.0\u002Bbuild6-0ubuntu1",
      "fix": "firefox 56.0\u002Bbuild6-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-56.0-build6-0ubuntu1",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-globalmenu",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "56.0\u002Bbuild6-0ubuntu1",
      "fix": "firefox-globalmenu 56.0\u002Bbuild6-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-globalmenu-56.0-build6-0ubuntu1",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "56.0\u002Bbuild6-0ubuntu1",
      "fix": "firefox-mozsymbols 56.0\u002Bbuild6-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-mozsymbols-56.0-build6-0ubuntu1",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "firefox-testsuite",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "56.0\u002Bbuild6-0ubuntu1",
      "fix": "firefox-testsuite 56.0\u002Bbuild6-0ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-testsuite-56.0-build6-0ubuntu1",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libnss3",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:3.32-1ubuntu3",
      "fix": "libnss3 2:3.32-1ubuntu3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libnss3-2-3.32-1ubuntu3",
      "released": "2017-09-28T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libnss3-tools",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:3.32-1ubuntu3",
      "fix": "libnss3-tools 2:3.32-1ubuntu3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libnss3-tools-2-3.32-1ubuntu3",
      "released": "2017-09-28T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "thunderbird 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-globalmenu",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "thunderbird-globalmenu 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-globalmenu-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-gnome-support",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "thunderbird-gnome-support 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-mozsymbols",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "thunderbird-mozsymbols 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "thunderbird-testsuite",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "thunderbird-testsuite 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-testsuite-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-calendar-timezones",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "xul-ext-calendar-timezones 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-gdata-provider",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "xul-ext-gdata-provider 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xul-ext-lightning",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:52.4.0\u002Bbuild1-0ubuntu2",
      "fix": "xul-ext-lightning 1:52.4.0\u002Bbuild1-0ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-xul-ext-lightning-1-52.4.0-build1-0ubuntu2",
      "released": "2017-10-01T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}