Vulnerabilities > CVE-2019-11250 - Information Exposure Through Log Files vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
The Kubernetes client-go library logs request headers at verbosity levels of 7 or higher. This can disclose credentials to unauthorized users via logs or command output. Kubernetes components (such as kube-apiserver) prior to v1.16.0, which make use of basic or bearer token authentication, and run at high verbosity levels, are affected.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Fuzzing and observing application log data/errors for application mapping An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. Fuzzing techniques involve sending random or malformed messages to a target and monitoring the target's response. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash. By observing logs and error messages, the attacker can learn details about the configuration of the target application and might be able to cause the target to disclose sensitive information.
Nessus
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-4052.NASL description 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 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 seen 2020-06-01 modified 2020-06-02 plugin id 132222 published 2019-12-18 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132222 title RHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2019:4052) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2019:4052. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(132222); script_version("1.2"); script_cvs_date("Date: 2019/12/20"); script_cve_id("CVE-2019-11250"); script_xref(name:"RHSA", value:"2019:4052"); script_name(english:"RHEL 7 : OpenShift Container Platform 3.11 atomic-openshift (RHSA-2019:4052)"); 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 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) : * kubernetes: Bearer tokens written to logs at high verbosity levels (>= 7) (CVE-2019-11250) 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-2019:4052" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2019-11250" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:N/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:N/S:U/C:H/I:N/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: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:"2019/08/29"); script_set_attribute(attribute:"patch_publication_date", value:"2019/12/16"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/18"); 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-2019:4052"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_NOTE, 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-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-clients-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-clients-3.11.157-1.git.0.dfe38da.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-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-docker-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-docker-excluder-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-excluder-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", reference:"atomic-openshift-excluder-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-hyperkube-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hyperkube-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-hypershift-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-hypershift-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-master-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-master-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-node-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-node-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-pod-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-pod-3.11.157-1.git.0.dfe38da.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-3.11.157-1.git.0.dfe38da.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-3.11.157-1.git.0.dfe38da.el7")) flag++; if (rpm_exists(rpm:"atomic-openshift-tests-3.11", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"atomic-openshift-tests-3.11.157-1.git.0.dfe38da.el7")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_NOTE, 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 family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2020-2_0-0229_KUBERNETES.NASL description An update of the kubernetes package has been released. last seen 2020-04-30 modified 2020-04-22 plugin id 135869 published 2020-04-22 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135869 title Photon OS 2.0: Kubernetes PHSA-2020-2.0-0229 NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2020-1_0-0288_KUBERNETES.NASL description An update of the kubernetes package has been released. last seen 2020-04-22 modified 2020-04-15 plugin id 135489 published 2020-04-15 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135489 title Photon OS 1.0: Kubernetes PHSA-2020-1.0-0288 NASL family Fedora Local Security Checks NASL id FEDORA_2019-2B8EF08C95.NASL description Update to v1.15.2 + carry upstream #81330 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 128127 published 2019-08-26 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128127 title Fedora 30 : kubernetes (2019-2b8ef08c95) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-4087.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 132225 published 2019-12-18 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132225 title RHEL 7 / 8 : OpenShift Container Platform 4.1 openshift (RHSA-2019:4087) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2020-3_0-0084_KUBERNETES.NASL description An update of the kubernetes package has been released. last seen 2020-05-03 modified 2020-04-29 plugin id 136099 published 2020-04-29 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136099 title Photon OS 3.0: Kubernetes PHSA-2020-3.0-0084
Redhat
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References
- http://www.openwall.com/lists/oss-security/2020/10/16/2
- http://www.openwall.com/lists/oss-security/2020/10/16/2
- https://access.redhat.com/errata/RHSA-2019:4052
- https://access.redhat.com/errata/RHSA-2019:4052
- https://access.redhat.com/errata/RHSA-2019:4087
- https://access.redhat.com/errata/RHSA-2019:4087
- https://github.com/kubernetes/kubernetes/issues/81114
- https://github.com/kubernetes/kubernetes/issues/81114
- https://security.netapp.com/advisory/ntap-20190919-0003/
- https://security.netapp.com/advisory/ntap-20190919-0003/