GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
usn-2673-1
Vulnerability from osv_ubuntu
Published
2015-07-20 22:04
Modified
2026-05-29 17:43
Summary
thunderbird vulnerabilities
Details

Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to skip the ServerKeyExchange message and remove the forward-secrecy property. (CVE-2015-2721)

Bob Clary, Christian Holler, Bobby Holley, and Andrew McCreight discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2724)

Ronald Crane discovered multiple security vulnerabilities. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2734, CVE-2015-2735, CVE-2015-2736, CVE-2015-2737, CVE-2015-2738, CVE-2015-2739, CVE-2015-2740)

Matthew Green discovered a DHE key processing issue in NSS where a MITM could force a server to downgrade TLS connections to 512-bit export-grade cryptography. An attacker could potentially exploit this to impersonate the server. (CVE-2015-4000)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2015-2721",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2724",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2734",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2735",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2736",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2737",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2738",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2739",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-2740",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-4000",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "thunderbird",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "thunderbird-globalmenu",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "thunderbird-testsuite",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          },
          {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:31.8.0+build1-0ubuntu0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "thunderbird",
        "purl": "pkg:deb/ubuntu/thunderbird@1:31.8.0+build1-0ubuntu0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:31.8.0+build1-0ubuntu0.14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:24.0+build1-0ubuntu1",
        "1:24.0+build1-0ubuntu2",
        "1:24.1.1+build1-0ubuntu0.13.10.1",
        "1:24.1.1+build1-0ubuntu1",
        "1:24.2.0+build1-0ubuntu1",
        "1:24.4.0+build1-0ubuntu1",
        "1:24.5.0+build1-0ubuntu0.14.04.1",
        "1:24.6.0+build1-0ubuntu0.14.04.1",
        "1:31.0+build1-0ubuntu0.14.04.1",
        "1:31.1.1+build1-0ubuntu0.14.04.1",
        "1:31.1.2+build1-0ubuntu0.14.04.1",
        "1:31.2.0+build2-0ubuntu0.14.04.1",
        "1:31.3.0+build1-0ubuntu0.14.04.1",
        "1:31.4.0+build1-0ubuntu0.14.04.1",
        "1:31.5.0+build1-0ubuntu0.14.04.1",
        "1:31.6.0+build1-0ubuntu0.14.04.1",
        "1:31.7.0+build1-0ubuntu0.14.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Karthikeyan Bhargavan discovered that NSS incorrectly handled state\ntransitions for the TLS state machine. If a remote attacker were able to\nperform a machine-in-the-middle attack, this flaw could be exploited to skip\nthe ServerKeyExchange message and remove the forward-secrecy property.\n(CVE-2015-2721)\n\nBob Clary, Christian Holler, Bobby Holley, and Andrew McCreight discovered\nmultiple memory safety issues in Thunderbird. If a user were tricked in to\nopening a specially crafted website in a browsing context, an attacker\ncould potentially exploit these to cause a denial of service via\napplication crash, or execute arbitrary code with the privileges of the\nuser invoking Thunderbird. (CVE-2015-2724)\n\nRonald Crane discovered multiple security vulnerabilities. If a user were\ntricked in to opening a specially crafted website in a browsing context,\nan attacker could potentially exploit these to cause a denial of service\nvia application crash, or execute arbitrary code with the privileges of\nthe user invoking Thunderbird. (CVE-2015-2734, CVE-2015-2735,\nCVE-2015-2736, CVE-2015-2737, CVE-2015-2738, CVE-2015-2739, CVE-2015-2740)\n\nMatthew Green discovered a DHE key processing issue in NSS where a MITM\ncould force a server to downgrade TLS connections to 512-bit export-grade\ncryptography. An attacker could potentially exploit this to impersonate\nthe server. (CVE-2015-4000)\n",
  "id": "USN-2673-1",
  "modified": "2026-05-29T17:43:57Z",
  "published": "2015-07-20T22:04:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2673-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2721"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2724"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2734"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2735"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2736"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2737"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2738"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2739"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-2740"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-4000"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "thunderbird vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2015-2721",
    "UBUNTU-CVE-2015-2724",
    "UBUNTU-CVE-2015-2734",
    "UBUNTU-CVE-2015-2735",
    "UBUNTU-CVE-2015-2736",
    "UBUNTU-CVE-2015-2737",
    "UBUNTU-CVE-2015-2738",
    "UBUNTU-CVE-2015-2739",
    "UBUNTU-CVE-2015-2740",
    "UBUNTU-CVE-2015-4000"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.