ubuntu-cve-2017-3733
Vulnerability from osv_ubuntu
Published
2017-05-04 19:29
Modified
2025-07-16 04:51
Summary
Details

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libcrypto1.0.0-udeb",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libcrypto1.0.0-udeb-dbgsym",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl-dev",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl-dev-dbgsym",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl-doc",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl1.0.0-dbg",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl1.0.0-dbgsym",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl1.0.0-udeb",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "libssl1.0.0-udeb-dbgsym",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.0.1f-1ubuntu2.22"
          },
          {
            "binary_name": "openssl-dbgsym",
            "binary_version": "1.0.1f-1ubuntu2.22"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.22?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1f-1ubuntu2.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.1e-3ubuntu1",
        "1.0.1e-4ubuntu1",
        "1.0.1e-4ubuntu2",
        "1.0.1e-4ubuntu3",
        "1.0.1e-4ubuntu4",
        "1.0.1f-1ubuntu1",
        "1.0.1f-1ubuntu2",
        "1.0.1f-1ubuntu2.1",
        "1.0.1f-1ubuntu2.2",
        "1.0.1f-1ubuntu2.3",
        "1.0.1f-1ubuntu2.4",
        "1.0.1f-1ubuntu2.5",
        "1.0.1f-1ubuntu2.7",
        "1.0.1f-1ubuntu2.8",
        "1.0.1f-1ubuntu2.11",
        "1.0.1f-1ubuntu2.12",
        "1.0.1f-1ubuntu2.15",
        "1.0.1f-1ubuntu2.16",
        "1.0.1f-1ubuntu2.17",
        "1.0.1f-1ubuntu2.18",
        "1.0.1f-1ubuntu2.19",
        "1.0.1f-1ubuntu2.20",
        "1.0.1f-1ubuntu2.21"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libcrypto1.0.0-udeb",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libcrypto1.0.0-udeb-dbgsym",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl-dev",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl-dev-dbgsym",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl-doc",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl1.0.0-dbg",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl1.0.0-dbgsym",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl1.0.0-udeb",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "libssl1.0.0-udeb-dbgsym",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.0.2g-1ubuntu4.6"
          },
          {
            "binary_name": "openssl-dbgsym",
            "binary_version": "1.0.2g-1ubuntu4.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.6?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.2g-1ubuntu4.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2d-0ubuntu1",
        "1.0.2d-0ubuntu2",
        "1.0.2e-1ubuntu1",
        "1.0.2f-2ubuntu1",
        "1.0.2g-1ubuntu2",
        "1.0.2g-1ubuntu3",
        "1.0.2g-1ubuntu4",
        "1.0.2g-1ubuntu4.1",
        "1.0.2g-1ubuntu4.2",
        "1.0.2g-1ubuntu4.4",
        "1.0.2g-1ubuntu4.5"
      ]
    }
  ],
  "aliases": [],
  "details": "During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.",
  "id": "UBUNTU-CVE-2017-3733",
  "modified": "2025-07-16T04:51:47Z",
  "published": "2017-05-04T19:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-3733"
    },
    {
      "type": "REPORT",
      "url": "https://www.openssl.org/news/secadv/20170216.txt"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-3733"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-3733"
  ],
  "withdrawn": "2025-07-18T16:43:49Z"
}



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