Vulnerabilities > CVE-2019-3876 - Unspecified vulnerability in Redhat Openshift Container Platform

047910
CVSS 6.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
LOW
Integrity impact
LOW
Availability impact
LOW
network
low complexity
redhat
nessus

Summary

A flaw was found in the /oauth/token/request custom endpoint of the OpenShift OAuth server allowing for XSS generation of CLI tokens due to missing X-Frame-Options and CSRF protections. If not otherwise prevented, a separate XSS vulnerability via JavaScript could further allow for the extraction of these tokens.

Nessus

NASL familyRed Hat Local Security Checks
NASL idREDHAT-RHSA-2019-1851.NASL
descriptionAn update for atomic-openshift and jenkins-2-plugins is now available for Red Hat OpenShift Container Platform 3.11. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Container Platform is Red Hat
last seen2020-06-01
modified2020-06-02
plugin id127032
published2019-07-25
reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/127032
titleRHEL 7 : OpenShift Container Platform 3.11 (RHSA-2019:1851)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:1851. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127032);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2019-1002100", "CVE-2019-10337", "CVE-2019-3876");
  script_xref(name:"RHSA", value:"2019:1851");

  script_name(english:"RHEL 7 : OpenShift Container Platform 3.11 (RHSA-2019:1851)");
  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:
"An update for atomic-openshift and jenkins-2-plugins is now available
for Red Hat OpenShift Container Platform 3.11.

Red Hat Product Security has rated this update as having a security
impact of Moderate. 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 Container Platform is Red Hat's cloud computing
Kubernetes application platform solution designed for on-premise or
private cloud deployments.

Security Fix(es) :

* web-console: XSS in OAuth server /oauth/token/request endpoint
(CVE-2019-3876)

* jenkins-plugin-token-macro: XML External Entity processing the
${XML} macro (CVE-2019-10337)

* kube-apiserver: DoS with crafted patch of type json-patch
(CVE-2019-1002100)

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-2019:1851"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-3876"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-10337"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-1002100"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  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:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3876");
  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:atomic-openshift");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-clients-redistributable");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-docker-excluder");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-excluder");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-hyperkube");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-hypershift");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-master");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-node");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-pod");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-sdn-ovs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-template-service-broker");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:atomic-openshift-tests");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jenkins-2-plugins");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 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([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.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);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:1851";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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_exists(rpm:"atomic-openshift-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-clients-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-clients-redistributable-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-redistributable-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-docker-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-docker-excluder-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-excluder-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-hyperkube-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hyperkube-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-hypershift-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hypershift-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-master-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-master-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-node-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-node-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-pod-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-pod-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-sdn-ovs-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-sdn-ovs-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-template-service-broker-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-template-service-broker-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-tests-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-tests-3.11.129-1.git.0.bd4f2d5.el7")) flag++;
  if (rpm_check(release:"RHEL7", reference:"jenkins-2-plugins-3.11.1560870549-1.el7")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, "atomic-openshift / atomic-openshift-clients / etc");
  }
}

Redhat

advisories
rhsa
idRHSA-2019:1851
rpms
  • atomic-openshift-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-clients-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-clients-redistributable-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-docker-excluder-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-excluder-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-hyperkube-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-hypershift-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-master-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-node-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-pod-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-sdn-ovs-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-template-service-broker-0:3.11.129-1.git.0.bd4f2d5.el7
  • atomic-openshift-tests-0:3.11.129-1.git.0.bd4f2d5.el7
  • jenkins-2-plugins-0:3.11.1560870549-1.el7