Vulnerabilities > CVE-2019-18801 - Out-of-bounds Write vulnerability in Envoyproxy Envoy

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
envoyproxy
CWE-787
critical
nessus

Summary

An issue was discovered in Envoy 1.12.0. An untrusted remote client may send HTTP/2 requests that write to the heap outside of the request buffers when the upstream is HTTP/1. This may be used to corrupt nearby heap contents (leading to a query-of-death scenario) or may be used to bypass Envoy's access control mechanisms such as path based routing. An attacker can also modify requests from other users that happen to be proximal temporally and spatially.

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2020-1_0-0268_ENVOY.NASL
    descriptionAn update of the envoy package has been released.
    last seen2020-06-01
    modified2020-06-02
    plugin id133470
    published2020-02-04
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133470
    titlePhoton OS 1.0: Envoy PHSA-2020-1.0-0268
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    # The descriptive text and package checks in this plugin were
    # extracted from VMware Security Advisory PHSA-2020-1.0-0268. The text
    # itself is copyright (C) VMware, Inc.
    
    include('compat.inc');
    
    if (description)
    {
      script_id(133470);
      script_version("1.2");
      script_cvs_date("Date: 2020/02/05");
    
      script_cve_id("CVE-2019-18801");
    
      script_name(english:"Photon OS 1.0: Envoy PHSA-2020-1.0-0268");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote PhotonOS host is missing multiple security updates.");
      script_set_attribute(attribute:"description", value:
    "An update of the envoy package has been released.");
      script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-1.0-268.md");
      script_set_attribute(attribute:"solution", value:
    "Update the affected Linux packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-18801");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/13");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/01/31");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/04");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:envoy");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"PhotonOS Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/rpm-list");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/PhotonOS/release");
    if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
    if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");
    
    if (!get_kb_item("Host/PhotonOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "PhotonOS", cpu);
    
    flag = 0;
    
    if (rpm_check(release:"PhotonOS-1.0", cpu:"x86_64", reference:"envoy-1.10.0-5.ph1")) flag++;
    if (rpm_check(release:"PhotonOS-1.0", cpu:"x86_64", reference:"envoy-debuginfo-1.10.0-5.ph1")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "envoy");
    }
    
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2020-2_0-0202_ENVOY.NASL
    descriptionAn update of the envoy package has been released.
    last seen2020-06-01
    modified2020-06-02
    plugin id133263
    published2020-01-27
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133263
    titlePhoton OS 2.0: Envoy PHSA-2020-2.0-0202
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    # The descriptive text and package checks in this plugin were
    # extracted from VMware Security Advisory PHSA-2020-2.0-0202. The text
    # itself is copyright (C) VMware, Inc.
    
    include('compat.inc');
    
    if (description)
    {
      script_id(133263);
      script_version("1.2");
      script_cvs_date("Date: 2020/01/29");
    
      script_cve_id("CVE-2019-18801");
    
      script_name(english:"Photon OS 2.0: Envoy PHSA-2020-2.0-0202");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote PhotonOS host is missing multiple security updates.");
      script_set_attribute(attribute:"description", value:
    "An update of the envoy package has been released.");
      script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-2-202.md");
      script_set_attribute(attribute:"solution", value:
    "Update the affected Linux packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-18801");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/13");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/01/25");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/27");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:envoy");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:2.0");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"PhotonOS Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/rpm-list");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/PhotonOS/release");
    if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
    if (release !~ "^VMware Photon (?:Linux|OS) 2\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 2.0");
    
    if (!get_kb_item("Host/PhotonOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "PhotonOS", cpu);
    
    flag = 0;
    
    if (rpm_check(release:"PhotonOS-2.0", cpu:"x86_64", reference:"envoy-1.10.0-5.ph2")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "envoy");
    }
    
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2019-4222.NASL
    descriptionRed Hat OpenShift Service Mesh 1.0.3. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Red Hat OpenShift Service Mesh is Red Hat
    last seen2020-06-01
    modified2020-06-02
    plugin id132031
    published2019-12-13
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132031
    titleRHEL 8 : Red Hat OpenShift Service Mesh 1.0.3 RPMs (RHSA-2019:4222)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2019:4222. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(132031);
      script_version("1.4");
      script_cvs_date("Date: 2019/12/20");
    
      script_cve_id("CVE-2019-18801", "CVE-2019-18802", "CVE-2019-18838");
      script_xref(name:"RHSA", value:"2019:4222");
    
      script_name(english:"RHEL 8 : Red Hat OpenShift Service Mesh 1.0.3 RPMs (RHSA-2019:4222)");
      script_summary(english:"Checks the rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Red Hat OpenShift Service Mesh 1.0.3.
    
    Red Hat Product Security has rated this update as having a security
    impact of Critical. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available for each
    vulnerability from the CVE link(s) in the References section.
    
    Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio
    service mesh project, tailored for installation into an on-premise
    OpenShift Container Platform installation.
    
    This advisory covers the RPM packages for the OpenShift Service Mesh
    1.0.3 release.
    
    Security Fix(es) :
    
    * An untrusted remote client may send HTTP/2 requests that write to
    the heap outside of the request buffers when the upstream is HTTP/1
    (CVE-2019-18801)
    
    * Malformed request header may cause bypass of route matchers
    resulting in escalation of privileges or information disclosure
    (CVE-2019-18802)
    
    * Malformed HTTP request without the Host header may cause abnormal
    termination of the Envoy process (CVE-2019-18838)
    
    For 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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/errata/RHSA-2019:4222"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2019-18801"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2019-18802"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2019-18838"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-18802");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-citadel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-cni");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-galley");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-grafana");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-grafana-prometheus");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-istioctl");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-mixc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-mixs");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-operator");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-pilot-agent");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-pilot-discovery");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-prometheus");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-proxy");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:servicemesh-sidecar-injector");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/13");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/12/11");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/13");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Red Hat Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(7|8)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x / 8.x", "Red Hat " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
    
    yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
    if (!empty_or_null(yum_updateinfo)) 
    {
      rhsa = "RHSA-2019:4222";
      yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
      if (!empty_or_null(yum_report))
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_HOLE,
          extra      : yum_report 
        );
        exit(0);
      }
      else
      {
        audit_message = "affected by Red Hat security advisory " + rhsa;
        audit(AUDIT_OS_NOT, audit_message);
      }
    }
    else
    {
      flag = 0;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-citadel-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-cni-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-galley-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-grafana-6.2.2-25.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-grafana-prometheus-6.2.2-25.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-istioctl-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-mixc-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-mixs-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-operator-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-pilot-agent-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-pilot-discovery-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-prometheus-2.7.2-26.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-proxy-1.0.3-1.el8")) flag++;
      if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"servicemesh-sidecar-injector-1.0.3-1.el8")) flag++;
    
      if (flag)
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_HOLE,
          extra      : rpm_report_get() + redhat_report_package_caveat()
        );
        exit(0);
      }
      else
      {
        tested = pkg_tests_get();
        if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
        else audit(AUDIT_PACKAGE_NOT_INSTALLED, "servicemesh / servicemesh-citadel / servicemesh-cni / etc");
      }
    }
    

Redhat

rpms
  • kiali-0:v1.0.8.redhat1-1.el7
  • servicemesh-0:1.0.3-1.el8
  • servicemesh-citadel-0:1.0.3-1.el8
  • servicemesh-cni-0:1.0.3-1.el8
  • servicemesh-galley-0:1.0.3-1.el8
  • servicemesh-grafana-0:6.2.2-25.el8
  • servicemesh-grafana-prometheus-0:6.2.2-25.el8
  • servicemesh-istioctl-0:1.0.3-1.el8
  • servicemesh-mixc-0:1.0.3-1.el8
  • servicemesh-mixs-0:1.0.3-1.el8
  • servicemesh-operator-0:1.0.3-1.el8
  • servicemesh-pilot-agent-0:1.0.3-1.el8
  • servicemesh-pilot-discovery-0:1.0.3-1.el8
  • servicemesh-prometheus-0:2.7.2-26.el8
  • servicemesh-proxy-0:1.0.3-1.el8
  • servicemesh-sidecar-injector-0:1.0.3-1.el8