{
  "threat_severity" : "Important",
  "public_date" : "2019-03-13T00:00:00Z",
  "bugzilla" : {
    "description" : "libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write",
    "id" : "1687304",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1687304"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-190->CWE-787",
  "details" : [ "An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.", "An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server." ],
  "statement" : "This flaw was present in libssh2 packages included in Red Hat Virtualization Hypervisor and Management Appliance, however libssh2 in these hosts is never exposed to malicious clients or servers.",
  "acknowledgement" : "Red Hat would like to thank the libssh2 project for reporting this issue. Upstream acknowledges Chris Coulson (Canonical Ltd.) as the original reporter.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2019-07-02T00:00:00Z",
    "advisory" : "RHSA-2019:1652",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "libssh2-0:1.4.2-3.el6_10.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2019-03-28T00:00:00Z",
    "advisory" : "RHSA-2019:0679",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "libssh2-0:1.4.3-12.el7_6.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2019-08-07T00:00:00Z",
    "advisory" : "RHSA-2019:2399",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "libssh2-0:1.4.3-11.el7_3.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Telco Extended Update Support",
    "release_date" : "2019-08-07T00:00:00Z",
    "advisory" : "RHSA-2019:2399",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.3",
    "package" : "libssh2-0:1.4.3-11.el7_3.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions",
    "release_date" : "2019-08-07T00:00:00Z",
    "advisory" : "RHSA-2019:2399",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.3",
    "package" : "libssh2-0:1.4.3-11.el7_3.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Extended Update Support",
    "release_date" : "2019-07-30T00:00:00Z",
    "advisory" : "RHSA-2019:1943",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.4",
    "package" : "libssh2-0:1.4.3-11.el7_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.5 Extended Update Support",
    "release_date" : "2019-07-16T00:00:00Z",
    "advisory" : "RHSA-2019:1791",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.5",
    "package" : "libssh2-0:1.4.3-11.el7_5.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2019-05-14T00:00:00Z",
    "advisory" : "RHSA-2019:1175",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "virt:rhel-8000020190510171727.55190bc5"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Affected",
    "package_name" : "virt:8.0.0/libssh2",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Virtualization 4",
    "fix_state" : "Will not fix",
    "package_name" : "redhat-virtualization-host",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4",
    "impact" : "low"
  }, {
    "product_name" : "Red Hat Virtualization 4",
    "fix_state" : "Will not fix",
    "package_name" : "rhvm-appliance",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4",
    "impact" : "low"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2019-3856\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3856\nhttps://www.libssh2.org/CVE-2019-3856.html" ],
  "name" : "CVE-2019-3856",
  "csaw" : false
}