Vulnerabilities > CVE-2019-11251 - Link Following vulnerability in Kubernetes

047910
CVSS 5.7 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
NONE
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
kubernetes
CWE-59
nessus
NVD
Published: 2020-02-03
Updated: 2024-11-21

Summary

The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.

Vulnerable Configurations

Part Description Count
Application
Kubernetes
110

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Symlink Attack
    An attacker positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name. The endpoint file may be either output or input. If the file is output, the result is that the endpoint is modified, instead of a file at the intended location. Modifications to the endpoint file may include appending, overwriting, corrupting, changing permissions, or other modifications. In some variants of this attack the attacker may be able to control the change to a file while in other cases they cannot. The former is especially damaging since the attacker may be able to grant themselves increased privileges or insert false information, but the latter can also be damaging as it can expose sensitive information or corrupt or destroy vital system or application files. Alternatively, the endpoint file may serve as input to the targeted application. This can be used to feed malformed input into the target or to cause the target to process different information, possibly allowing the attacker to control the actions of the target or to cause the target to expose information to the attacker. Moreover, the actions taken on the endpoint file are undertaken with the permissions of the targeted user or application, which may exceed the permissions that the attacker would normally have.
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Nessus

  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2019-3266.NASL
    descriptionAn update for openshift is now available for Red Hat OpenShift Container Platform 4.1. 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 id130419
    published2019-10-31
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130419
    titleRHEL 7 / 8 : OpenShift Container Platform 4.1 openshift (RHSA-2019:3266)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:3266. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130419);
  script_version("1.4");
  script_cvs_date("Date: 2020/02/12");

  script_cve_id("CVE-2019-11251");
  script_xref(name:"RHSA", value:"2019:3266");

  script_name(english:"RHEL 7 / 8 : OpenShift Container Platform 4.1 openshift (RHSA-2019:3266)");
  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 openshift is now available for Red Hat OpenShift
Container Platform 4.1.

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.

This advisory contains the openshift RPM packages for Red Hat
OpenShift Container Platform 4.1.21.

Security Fix(es) :

* kubernetes: `kubectl cp` allows for arbitrary file write via double
symlinks (CVE-2019-11251)

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-2019:3266"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11251"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected openshift-clients,
openshift-clients-redistributable and / or openshift-hyperkube
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:L/UI:R/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  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:openshift-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openshift-clients-redistributable");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openshift-hyperkube");
  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:"2020/02/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/31");
  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|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-2019:3266";
  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_check(release:"RHEL7", cpu:"x86_64", reference:"openshift-clients-4.1.21-201910220952.git.0.493dbf6.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openshift-clients-redistributable-4.1.21-201910220952.git.0.493dbf6.el7")) flag++;
  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openshift-hyperkube-4.1.21-201910220952.git.0.493dbf6.el7")) flag++;

  if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"openshift-clients-4.1.21-201910220952.git.0.493dbf6.el8")) flag++;
  if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"openshift-clients-redistributable-4.1.21-201910220952.git.0.493dbf6.el8")) flag++;
  if (rpm_check(release:"RHEL8", cpu:"x86_64", reference:"openshift-hyperkube-4.1.21-201910220952.git.0.493dbf6.el8")) 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, "openshift-clients / openshift-clients-redistributable / etc");
  }
}
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2019-3811.NASL
    descriptionAn update for atomic-openshift is now available for Red Hat OpenShift Container Platform 3.9. Red Hat Product Security has rated this update as having a security impact of Important. 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 id130747
    published2019-11-08
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130747
    titleRHEL 7 : OpenShift Container Platform 3.9 atomic-openshift (RHSA-2019:3811)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:3811. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130747);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/17");

  script_cve_id("CVE-2019-10150", "CVE-2019-11249", "CVE-2019-11251", "CVE-2019-11253");
  script_xref(name:"RHSA", value:"2019:3811");

  script_name(english:"RHEL 7 : OpenShift Container Platform 3.9 atomic-openshift (RHSA-2019:3811)");
  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 is now available for Red Hat OpenShift
Container Platform 3.9.

Red Hat Product Security has rated this update as having a security
impact of Important. 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.

This advisory contains the atomic-openshift RPM package for Red Hat
OpenShift Container Platform 3.9.102.

Security Fix(es) :

* kubernetes: YAML parsing vulnerable to 'Billion Laughs' attack,
allowing for remote denial of service (CVE-2019-11253)

* atomic-openshift: OpenShift builds don't verify SSH Host Keys for
the Git repository (CVE-2019-10150)

* kubernetes: Incomplete fixes for CVE-2019-1002101 and
CVE-2019-11246, kubectl cp potential directory traversal
(CVE-2019-11249)

* kubernetes: `kubectl cp` allows for arbitrary file write via double
symlinks (CVE-2019-11251)

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-2019:3811"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-10150"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11249"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11251"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11253"
  );
  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: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:R/S:U/C:N/I:H/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-2019-11249");
  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-cluster-capacity");
  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-federation-services");
  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-service-catalog");
  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:"cpe:/o:redhat:enterprise_linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/08");
  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([^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-2019:3811";
  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-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-clients-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-clients-redistributable-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-redistributable-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-cluster-capacity-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-cluster-capacity-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-docker-excluder-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-docker-excluder-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-excluder-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-excluder-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-federation-services-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-federation-services-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-master-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-master-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-node-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-node-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-pod-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-pod-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-sdn-ovs-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-sdn-ovs-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-service-catalog-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-service-catalog-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-template-service-broker-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-template-service-broker-3.9.102-1.git.0.6411f52.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-tests-3.9", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-tests-3.9.102-1.git.0.6411f52.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");
  }
}
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2019-3905.NASL
    descriptionAn update for atomic-openshift 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 Important. 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 id131153
    published2019-11-20
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131153
    titleRHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2019:3905)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:3905. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(131153);
  script_version("1.3");
  script_cvs_date("Date: 2020/02/10");

  script_cve_id("CVE-2019-11251", "CVE-2019-11253");
  script_xref(name:"RHSA", value:"2019:3905");

  script_name(english:"RHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2019:3905)");
  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 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 Important. 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.

This advisory contains the atomic-openshift RPM package for Red Hat
OpenShift Container Platform 3.11.154.

Security Fix(es) :

* kubernetes: YAML parsing vulnerable to 'Billion Laughs' attack,
allowing for remote denial of service (CVE-2019-11253)

* kubernetes: `kubectl cp` allows for arbitrary file write via double
symlinks (CVE-2019-11251)

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-2019:3905"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11251"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2019-11253"
  );
  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:L/UI:R/S:U/C:N/I:H/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-2019-11251");
  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:"cpe:/o:redhat:enterprise_linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/20");
  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-2019:3905";
  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-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-clients-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-3.11.154-1.git.0.7a097ad.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-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-docker-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-docker-excluder-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-excluder-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-hyperkube-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hyperkube-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-hypershift-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hypershift-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-master-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-master-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-node-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-node-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-pod-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-pod-3.11.154-1.git.0.7a097ad.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-3.11.154-1.git.0.7a097ad.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-3.11.154-1.git.0.7a097ad.el7")) flag++;
  if (rpm_exists(rpm:"atomic-openshift-tests-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-tests-3.11.154-1.git.0.7a097ad.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");
  }
}
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2020-2_0-0229_KUBERNETES.NASL
    descriptionAn update of the kubernetes package has been released.
    last seen2020-04-30
    modified2020-04-22
    plugin id135869
    published2020-04-22
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135869
    titlePhoton OS 2.0: Kubernetes PHSA-2020-2.0-0229
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2020-3_0-0084_KUBERNETES.NASL
    descriptionAn update of the kubernetes package has been released.
    last seen2020-05-03
    modified2020-04-29
    plugin id136099
    published2020-04-29
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136099
    titlePhoton OS 3.0: Kubernetes PHSA-2020-3.0-0084

Redhat

rpms
  • openshift-clients-0:4.1.21-201910220952.git.0.493dbf6.el7
  • openshift-clients-0:4.1.21-201910220952.git.0.493dbf6.el8
  • openshift-clients-redistributable-0:4.1.21-201910220952.git.0.493dbf6.el7
  • openshift-clients-redistributable-0:4.1.21-201910220952.git.0.493dbf6.el8
  • openshift-hyperkube-0:4.1.21-201910220952.git.0.493dbf6.el7
  • openshift-hyperkube-0:4.1.21-201910220952.git.0.493dbf6.el8
  • atomic-openshift-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-clients-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-clients-redistributable-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-cluster-capacity-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-docker-excluder-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-excluder-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-federation-services-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-master-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-node-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-pod-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-sdn-ovs-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-service-catalog-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-template-service-broker-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-tests-0:3.9.102-1.git.0.6411f52.el7
  • atomic-openshift-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-clients-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-clients-redistributable-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-docker-excluder-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-excluder-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-hyperkube-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-hypershift-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-master-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-node-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-pod-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-sdn-ovs-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-template-service-broker-0:3.11.154-1.git.0.7a097ad.el7
  • atomic-openshift-tests-0:3.11.154-1.git.0.7a097ad.el7

References