Vulnerabilities > CVE-2018-6764 - Origin Validation Error vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 | |
| OS | 2 | |
| OS | 3 | |
| OS | 3 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- JSON Hijacking (aka JavaScript Hijacking) An attacker targets a system that uses JavaScript Object Notation (JSON) as a transport mechanism between the client and the server (common in Web 2.0 systems using AJAX) to steal possibly confidential information transmitted from the server back to the client inside the JSON object by taking advantage of the loophole in the browser's Same Origin Policy that does not prohibit JavaScript from one website to be included and executed in the context of another website. An attacker gets the victim to visit his or her malicious page that contains a script tag whose source points to the vulnerable system with a URL that requests a response from the server containing a JSON object with possibly confidential information. The malicious page also contains malicious code to capture the JSON object returned by the server before any other processing on it can take place, typically by overriding the JavaScript function used to create new objects. This hook allows the malicious code to get access to the creation of each object and transmit the possibly sensitive contents of the captured JSON object to the attackers' server. There is nothing in the browser's security model to prevent the attackers' malicious JavaScript code (originating from attacker's domain) to set up an environment (as described above) to intercept a JSON object response (coming from the vulnerable target system's domain), read its contents and transmit to the attackers' controlled site. The same origin policy protects the domain object model (DOM), but not the JSON.
- Cache Poisoning An attacker exploits the functionality of cache technologies to cause specific data to be cached that aids the attackers' objectives. This describes any attack whereby an attacker places incorrect or harmful material in cache. The targeted cache can be an application's cache (e.g. a web browser cache) or a public cache (e.g. a DNS or ARP cache). Until the cache is refreshed, most applications or clients will treat the corrupted cache value as valid. This can lead to a wide range of exploits including redirecting web browsers towards sites that install malware and repeatedly incorrect calculations based on the incorrect value.
- DNS Cache Poisoning A domain name server translates a domain name (such as www.example.com) into an IP address that Internet hosts use to contact Internet resources. An attacker modifies a public DNS cache to cause certain names to resolve to incorrect addresses that the attacker specifies. The result is that client applications that rely upon the targeted cache for domain name resolution will be directed not to the actual address of the specified domain name but to some other address. Attackers can use this to herd clients to sites that install malware on the victim's computer or to masquerade as part of a Pharming attack.
- Exploitation of Session Variables, Resource IDs and other Trusted Credentials Attacks on session IDs and resource IDs take advantage of the fact that some software accepts user input without verifying its authenticity. For example, a message queuing system that allows service requesters to post messages to its queue through an open channel (such as anonymous FTP), authorization is done through checking group or role membership contained in the posted message. However, there is no proof that the message itself, the information in the message (such group or role membership), or indeed the process that wrote the message to the queue are authentic and authorized to do so. Many server side processes are vulnerable to these attacks because the server to server communications have not been analyzed from a security perspective or the processes "trust" other systems because they are behind a firewall. In a similar way servers that use easy to guess or spoofable schemes for representing digital identity can also be vulnerable. Such systems frequently use schemes without cryptography and digital signatures (or with broken cryptography). Session IDs may be guessed due to insufficient randomness, poor protection (passed in the clear), lack of integrity (unsigned), or improperly correlation with access control policy enforcement points. Exposed configuration and properties files that contain system passwords, database connection strings, and such may also give an attacker an edge to identify these identifiers. The net result is that spoofing and impersonation is possible leading to an attacker's ability to break authentication, authorization, and audit controls on the system.
- Application API Message Manipulation via Man-in-the-Middle An attacker manipulates either egress or ingress data from a client within an application framework in order to change the content of messages. Performing this attack can allow the attacker to gain unauthorized privileges within the application, or conduct attacks such as phishing, deceptive strategies to spread malware, or traditional web-application attacks. The techniques require use of specialized software that allow the attacker to man-in-the-middle communications between the web browser and the remote system. Despite the use of MITM software, the attack is actually directed at the server, as the client is one node in a series of content brokers that pass information along to the application framework. Additionally, it is not true "Man-in-the-Middle" attack at the network layer, but an application-layer attack the root cause of which is the master applications trust in the integrity of code supplied by the client.
Nessus
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3576-1.NASL description Vivian Zhang and Christoph Anton Mitterer discovered that libvirt incorrectly disabled password authentication when the VNC password was set to an empty string. A remote attacker could possibly use this issue to bypass authentication, contrary to expectations. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008) Daniel P. Berrange discovered that libvirt incorrectly handled validating SSL/TLS certificates. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 17.10. (CVE-2017-1000256) Daniel P. Berrange and Peter Krempa discovered that libvirt incorrectly handled large QEMU replies. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2018-5748) Pedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so module. An attacker in a libvirt_lxc session could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-6764). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. 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 106928 published 2018-02-21 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106928 title Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : libvirt vulnerabilities (USN-3576-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-3576-1. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(106928); script_version("3.5"); script_cvs_date("Date: 2019/09/18 12:31:48"); script_cve_id("CVE-2016-5008", "CVE-2017-1000256", "CVE-2018-5748", "CVE-2018-6764"); script_xref(name:"USN", value:"3576-1"); script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : libvirt vulnerabilities (USN-3576-1)"); script_summary(english:"Checks dpkg output for updated packages."); script_set_attribute( attribute:"synopsis", value: "The remote Ubuntu host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "Vivian Zhang and Christoph Anton Mitterer discovered that libvirt incorrectly disabled password authentication when the VNC password was set to an empty string. A remote attacker could possibly use this issue to bypass authentication, contrary to expectations. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008) Daniel P. Berrange discovered that libvirt incorrectly handled validating SSL/TLS certificates. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 17.10. (CVE-2017-1000256) Daniel P. Berrange and Peter Krempa discovered that libvirt incorrectly handled large QEMU replies. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2018-5748) Pedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so module. An attacker in a libvirt_lxc session could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-6764). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://usn.ubuntu.com/3576-1/" ); script_set_attribute( attribute:"solution", value:"Update the affected libvirt-bin and / or libvirt0 packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-bin"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.10"); script_set_attribute(attribute:"vuln_publication_date", value:"2016/07/13"); script_set_attribute(attribute:"patch_publication_date", value:"2018/02/20"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/21"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! preg(pattern:"^(14\.04|16\.04|17\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 17.10", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"14.04", pkgname:"libvirt-bin", pkgver:"1.2.2-0ubuntu13.1.26")) flag++; if (ubuntu_check(osver:"14.04", pkgname:"libvirt0", pkgver:"1.2.2-0ubuntu13.1.26")) flag++; if (ubuntu_check(osver:"16.04", pkgname:"libvirt-bin", pkgver:"1.3.1-1ubuntu10.19")) flag++; if (ubuntu_check(osver:"16.04", pkgname:"libvirt0", pkgver:"1.3.1-1ubuntu10.19")) flag++; if (ubuntu_check(osver:"17.10", pkgname:"libvirt-bin", pkgver:"3.6.0-1ubuntu6.3")) flag++; if (ubuntu_check(osver:"17.10", pkgname:"libvirt0", pkgver:"3.6.0-1ubuntu6.3")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvirt-bin / libvirt0"); }NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2018-3113.NASL description An update for libvirt is now available for Red Hat Enterprise Linux 7. 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. The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. The following packages have been upgraded to a later upstream version: libvirt (4.5.0). (BZ#1563169) Security Fix(es) : * libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section. last seen 2020-03-28 modified 2018-12-17 plugin id 119692 published 2018-12-17 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119692 title CentOS 7 : libvirt (CESA-2018:3113) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2018:3113 and # CentOS Errata and Security Advisory 2018:3113 respectively. # include("compat.inc"); if (description) { script_id(119692); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/27"); script_cve_id("CVE-2018-6764"); script_xref(name:"RHSA", value:"2018:3113"); script_name(english:"CentOS 7 : libvirt (CESA-2018:3113)"); script_summary(english:"Checks rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote CentOS host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "An update for libvirt is now available for Red Hat Enterprise Linux 7. 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. The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. The following packages have been upgraded to a later upstream version: libvirt (4.5.0). (BZ#1563169) Security Fix(es) : * libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section." ); # https://lists.centos.org/pipermail/centos-cr-announce/2018-December/005780.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?f837ad81" ); script_set_attribute( attribute:"solution", value:"Update the affected libvirt packages." ); script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/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-2018-6764"); 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:centos:centos:libvirt"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-admin"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-bash-completion"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-client"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-network"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-nwfilter"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-interface"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-lxc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-network"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nodedev"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nwfilter"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-qemu"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-secret"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-core"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-disk"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-gluster"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-iscsi"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-logical"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-mpath"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-rbd"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-scsi"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-kvm"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-lxc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-docs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-libs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-lock-sanlock"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-login-shell"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-nss"); script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/23"); script_set_attribute(attribute:"patch_publication_date", value:"2018/12/14"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/17"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"CentOS Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release"); if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS"); os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS"); os_ver = os_ver[1]; if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver); 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if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-lxc-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-network-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-nodedev-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-nwfilter-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-qemu-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-secret-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-core-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-disk-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-gluster-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-iscsi-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-logical-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-mpath-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-rbd-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-scsi-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-kvm-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-daemon-lxc-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-devel-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-docs-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-libs-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-lock-sanlock-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-login-shell-4.5.0-10.el7")) flag++; if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"libvirt-nss-4.5.0-10.el7")) flag++; if (flag) { cr_plugin_caveat = '\n' + 'NOTE: The security advisory associated with this vulnerability has a\n' + 'fixed package version that may only be available in the continuous\n' + 'release (CR) repository for CentOS, until it is present in the next\n' + 'point release of CentOS.\n\n' + 'If an equal or higher package level does not exist in the baseline\n' + 'repository for your major version of CentOS, then updates from the CR\n' + 'repository will need to be applied in order to address the\n' + 'vulnerability.\n'; security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() + cr_plugin_caveat ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvirt / libvirt-admin / libvirt-bash-completion / libvirt-client / etc"); }NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4137.NASL description Several vulnerabilities were discovered in Libvirt, a virtualisation abstraction library : - CVE-2018-1064 Daniel Berrange discovered that the QEMU guest agent performed insufficient validation of incoming data, which allows a privileged user in the guest to exhaust resources on the virtualisation host, resulting in denial of service. - CVE-2018-5748 Daniel Berrange and Peter Krempa discovered that the QEMU monitor was susceptible to denial of service by memory exhaustion. This was already fixed in Debian stretch and only affects Debian jessie. - CVE-2018-6764 Pedro Sampaio discovered that LXC containers detected the hostname insecurely. This only affects Debian stretch. last seen 2020-06-01 modified 2020-06-02 plugin id 108346 published 2018-03-15 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108346 title Debian DSA-4137-1 : libvirt - security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-4137. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(108346); script_version("1.5"); script_cvs_date("Date: 2018/11/13 12:30:46"); script_cve_id("CVE-2018-1064", "CVE-2018-5748", "CVE-2018-6764"); script_xref(name:"DSA", value:"4137"); script_name(english:"Debian DSA-4137-1 : libvirt - security update"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Several vulnerabilities were discovered in Libvirt, a virtualisation abstraction library : - CVE-2018-1064 Daniel Berrange discovered that the QEMU guest agent performed insufficient validation of incoming data, which allows a privileged user in the guest to exhaust resources on the virtualisation host, resulting in denial of service. - CVE-2018-5748 Daniel Berrange and Peter Krempa discovered that the QEMU monitor was susceptible to denial of service by memory exhaustion. This was already fixed in Debian stretch and only affects Debian jessie. - CVE-2018-6764 Pedro Sampaio discovered that LXC containers detected the hostname insecurely. This only affects Debian stretch." ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2018-1064" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2018-5748" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2018-6764" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/libvirt" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/libvirt" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/stretch/libvirt" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2018/dsa-4137" ); script_set_attribute( attribute:"solution", value: "Upgrade the libvirt packages. For the oldstable distribution (jessie), these problems have been fixed in version 1.2.9-9+deb8u5. For the stable distribution (stretch), these problems have been fixed in version 3.0.0-4+deb9u3." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libvirt"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0"); script_set_attribute(attribute:"patch_publication_date", value:"2018/03/14"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/15"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"8.0", prefix:"libvirt-bin", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-clients", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-daemon", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-daemon-system", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-dev", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-doc", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt-sanlock", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt0", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"8.0", prefix:"libvirt0-dbg", reference:"1.2.9-9+deb8u5")) flag++; if (deb_check(release:"9.0", prefix:"libnss-libvirt", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-clients", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-daemon", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-daemon-system", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-dev", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-doc", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt-sanlock", reference:"3.0.0-4+deb9u3")) flag++; if (deb_check(release:"9.0", prefix:"libvirt0", reference:"3.0.0-4+deb9u3")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201804-07.NASL description The remote host is affected by the vulnerability described in GLSA-201804-07 (libvirt: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libvirt. Please review the CVE identifiers referenced below for details. Impact : A local privileged attacker could execute arbitrary commands or cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 108928 published 2018-04-10 reporter This script is Copyright (C) 2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/108928 title GLSA-201804-07 : libvirt: Multiple vulnerabilities NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-0861-1.NASL description This update for libvirt fixes the following issues: Security issues fixed : - CVE-2017-5715: Fixes for speculative side channel attacks aka last seen 2020-06-01 modified 2020-06-02 plugin id 108827 published 2018-04-04 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108827 title SUSE SLED12 / SLES12 Security Update : libvirt (SUSE-SU-2018:0861-1) (Spectre) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1277.NASL description According to the versions of the libvirt packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) - qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.(CVE-2018-5748) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. 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 117585 published 2018-09-18 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/117585 title EulerOS Virtualization 2.5.0 : libvirt (EulerOS-SA-2018-1277) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1118.NASL description According to the version of the libvirt packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2019-04-02 plugin id 123592 published 2019-04-02 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/123592 title EulerOS 2.0 SP2 : libvirt (EulerOS-SA-2019-1118) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1314.NASL description According to the version of the libvirt packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2019-05-01 plugin id 124441 published 2019-05-01 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/124441 title EulerOS 2.0 SP3 : libvirt (EulerOS-SA-2019-1314) NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-358.NASL description This update for libvirt and virt-manager fixes the following issues : Security issues fixed : - CVE-2017-5715: Fixes for speculative side channel attacks aka last seen 2020-06-05 modified 2018-04-13 plugin id 109020 published 2018-04-13 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109020 title openSUSE Security Update : libvirt (openSUSE-2018-358) (Spectre) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1144.NASL description According to the version of the libvirt packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-06 modified 2019-04-02 plugin id 123618 published 2019-04-02 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/123618 title EulerOS 2.0 SP5 : libvirt (EulerOS-SA-2019-1144) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2018-3113.NASL description From Red Hat Security Advisory 2018:3113 : An update for libvirt is now available for Red Hat Enterprise Linux 7. 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. The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. The following packages have been upgraded to a later upstream version: libvirt (4.5.0). (BZ#1563169) Security Fix(es) : * libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 118773 published 2018-11-07 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118773 title Oracle Linux 7 : libvirt (ELSA-2018-3113) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2018-3113.NASL description An update for libvirt is now available for Red Hat Enterprise Linux 7. 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. The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. The following packages have been upgraded to a later upstream version: libvirt (4.5.0). (BZ#1563169) Security Fix(es) : * libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 118530 published 2018-10-31 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118530 title RHEL 7 : libvirt (RHSA-2018:3113) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1253.NASL description According to the versions of the libvirt packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An incomplete fix for CVE-2018-5748 that affects QEMU monitor leading to a resource exhaustion but now also triggered via QEMU guest agent.(CVE-2018-1064) - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) - qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.(CVE-2018-5748) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. 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 117562 published 2018-09-18 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/117562 title EulerOS Virtualization 2.5.1 : libvirt (EulerOS-SA-2018-1253) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2018-1134.NASL description util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) last seen 2020-03-28 modified 2018-12-20 plugin id 119788 published 2018-12-20 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119788 title Amazon Linux 2 : libvirt (ALAS-2018-1134) NASL family Scientific Linux Local Security Checks NASL id SL_20181030_LIBVIRT_ON_SL7_X.NASL description Security Fix(es) : - libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764) last seen 2020-03-18 modified 2018-11-27 plugin id 119193 published 2018-11-27 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119193 title Scientific Linux Security Update : libvirt on SL7.x x86_64 (20181030) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-0920-1.NASL description This update for libvirt and virt-manager fixes the following issues: Security issues fixed : - CVE-2017-5715: Fixes for speculative side channel attacks aka last seen 2020-06-01 modified 2020-06-02 plugin id 109012 published 2018-04-12 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/109012 title SUSE SLED12 / SLES12 Security Update : libvirt (SUSE-SU-2018:0920-1) (Spectre) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1394.NASL description According to the versions of the libvirt packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) - qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.(CVE-2018-5748) - libvirt version 2.3.0 and later is vulnerable to a bad default configuration of last seen 2020-06-01 modified 2020-06-02 plugin id 124897 published 2019-05-14 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/124897 title EulerOS Virtualization for ARM 64 3.0.1.0 : libvirt (EulerOS-SA-2019-1394) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1456.NASL description According to the versions of the libvirt packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.(CVE-2018-6764) - qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.(CVE-2018-5748) - libvirt version 2.3.0 and later is vulnerable to a bad default configuration of last seen 2020-06-01 modified 2020-06-02 plugin id 124959 published 2019-05-14 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/124959 title EulerOS Virtualization 3.0.1.0 : libvirt (EulerOS-SA-2019-1456)
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References
- http://www.ubuntu.com/usn/USN-3576-1
- http://www.ubuntu.com/usn/USN-3576-1
- https://access.redhat.com/errata/RHSA-2018:3113
- https://access.redhat.com/errata/RHSA-2018:3113
- https://www.debian.org/security/2018/dsa-4137
- https://www.debian.org/security/2018/dsa-4137
- https://www.redhat.com/archives/libvir-list/2018-February/msg00239.html
- https://www.redhat.com/archives/libvir-list/2018-February/msg00239.html