Vulnerabilities > CVE-2019-14834 - Allocation of Resources Without Limits or Throttling vulnerability in multiple products
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
LOW Summary
A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Locate and Exploit Test APIs An attacker exploits a sample, demonstration, or test API that is insecure by default and should not be resident on production systems. Some applications include APIs that are intended to allow an administrator to test and refine their domain. These APIs should usually be disabled once a system enters a production environment. Testing APIs may expose a great deal of diagnostic information intended to aid an administrator, but which can also be used by an attacker to further refine their attack. Moreover, testing APIs may not have adequate security controls or may not have undergone rigorous testing since they were not intended for use in production environments. As such, they may have many flaws and vulnerabilities that would allow an attacker to severely disrupt a target.
- Flooding An attacker consumes the resources of a target by rapidly engaging in a large number of interactions with the target. This type of attack generally exposes a weakness in rate limiting or flow control in management of interactions. Since each request consumes some of the target's resources, if a sufficiently large number of requests must be processed at the same time then the target's resources can be exhausted. The degree to which the attack is successful depends upon the volume of requests in relation to the amount of the resource the target has access to, and other mitigating circumstances such as the target's ability to shift load or acquired additional resources to deal with the depletion. The more protected the resource and the greater the quantity of it that must be consumed, the more resources the attacker may need to have at their disposal. A typical TCP/IP flooding attack is a Distributed Denial-of-Service attack where many machines simultaneously make a large number of requests to a target. Against a target with strong defenses and a large pool of resources, many tens of thousands of attacking machines may be required. When successful this attack prevents legitimate users from accessing the service and can cause the target to crash. This attack differs from resource depletion through leaks or allocations in that the latter attacks do not rely on the volume of requests made to the target but instead focus on manipulation of the target's operations. The key factor in a flooding attack is the number of requests the attacker can make in a given period of time. The greater this number, the more likely an attack is to succeed against a given target.
- Excessive Allocation An attacker causes the target to allocate excessive resources to servicing the attackers' request, thereby reducing the resources available for legitimate services and degrading or denying services. Usually, this attack focuses on memory allocation, but any finite resource on the target could be the attacked, including bandwidth, processing cycles, or other resources. This attack does not attempt to force this allocation through a large number of requests (that would be Resource Depletion through Flooding) but instead uses one or a small number of requests that are carefully formatted to force the target to allocate excessive resources to service this request(s). Often this attack takes advantage of a bug in the target to cause the target to allocate resources vastly beyond what would be needed for a normal request. For example, using an Integer Attack, the attacker could cause a variable that controls allocation for a request to hold an excessively large value. Excessive allocation of resources can render a service degraded or unavailable to legitimate users and can even lead to crashing of the target.
- XML Ping of the Death An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
- XML Entity Expansion An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
Nessus
NASL family DNS NASL id DNSMASQ_2_81.NASL description The version of dnsmasq installed on the remote host is prior to 2.81. It is, therefore, affected by a denial of service (DoS) vulnerability in last seen 2020-05-15 modified 2020-05-08 plugin id 136411 published 2020-05-08 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136411 title dnsmasq < 2.81 Denial of Service (DoS) Vulnerability code # # (C) Tenable Network Security, Inc. # include('compat.inc'); if (description) { script_id(136411); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/13"); script_cve_id("CVE-2019-14834"); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"dnsmasq < 2.81 Denial of Service (DoS) Vulnerability"); script_set_attribute(attribute:"synopsis", value: "The remote DNS / DHCP service is affected by DoS vulnerability"); script_set_attribute(attribute:"description", value: "The version of dnsmasq installed on the remote host is prior to 2.81. It is, therefore, affected by a denial of service (DoS) vulnerability in 'helper.c' due to a memory leak. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number."); # http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=69bc94779c2f035a9fffdb5327a54c3aeca73ed5 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?19058d2f"); script_set_attribute(attribute:"see_also", value:"http://www.thekelleys.org.uk/dnsmasq/CHANGELOG"); script_set_attribute(attribute:"solution", value: "Upgrade to dnsmasq 2.81 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:H/PR:N/UI:N/S:U/C:N/I:N/A:L"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14834"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/19"); script_set_attribute(attribute:"patch_publication_date", value:"2019/08/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/08"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:thekelleys:dnsmasq"); script_set_attribute(attribute:"stig_severity", value:"I"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"DNS"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("dns_version.nasl"); script_require_keys("dns_server/version", "Settings/ParanoidReport"); script_require_ports("Services/dns", 53); exit(0); } include('audit.inc'); app_name = 'dnsmasq'; port = get_kb_item('Services/udp/dns'); if (!port) port = 53; if (report_paranoia < 2) audit(AUDIT_PARANOID); # dnsmasq replies to BIND.VERSION version = tolower(get_kb_item_or_exit('dns_server/version')); display_version = version; if (version !~ "dnsmasq-(v)?") audit(AUDIT_NOT_LISTEN, app_name, port); version = preg_replace(pattern:"^dnsmasq-(v)?(.*)$", replace:"\2", string:version); if (version == '2') audit(AUDIT_VER_NOT_GRANULAR, app_name, port, display_version); fix = '2.81'; if (ver_compare(ver:version, fix:fix, strict:FALSE) >= 0) audit(AUDIT_LISTEN_NOT_VULN, app_name, port, version, 'udp'); report = '\n' + '\n Installed version : ' + display_version + '\n Fixed version : dnsmasq-' + fix + '\n'; security_report_v4(port:port, proto:"udp", severity:SECURITY_WARNING, extra:report);NASL family Fedora Local Security Checks NASL id FEDORA_2020-29B442F83E.NASL description Fixes possible memory leak and regression with multiple dhcp-host lines with different address family and the same mac address 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 2020-06-06 modified 2020-05-29 plugin id 136953 published 2020-05-29 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136953 title Fedora 31 : dnsmasq (2020-29b442f83e) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2020-29b442f83e. # include("compat.inc"); if (description) { script_id(136953); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/22"); script_cve_id("CVE-2019-14834"); script_xref(name:"FEDORA", value:"2020-29b442f83e"); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"Fedora 31 : dnsmasq (2020-29b442f83e)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "Fixes possible memory leak and regression with multiple dhcp-host lines with different address family and the same mac address 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." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2020-29b442f83e" ); script_set_attribute( attribute:"solution", value:"Update the affected dnsmasq package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:H/PR:N/UI:N/S:U/C:N/I:N/A:L"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14834"); 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:fedoraproject:fedora:dnsmasq"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:31"); script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/07"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_set_attribute(attribute:"stig_severity", value:"I"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^31([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 31", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC31", reference:"dnsmasq-2.80-15.fc31")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dnsmasq"); }NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1097.NASL description According to the version of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.(CVE-2019-14834) 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 2020-05-09 modified 2020-02-24 plugin id 133898 published 2020-02-24 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133898 title EulerOS 2.0 SP5 : dnsmasq (EulerOS-SA-2020-1097) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(133898); script_version("1.5"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/08"); script_cve_id( "CVE-2019-14834" ); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"EulerOS 2.0 SP5 : dnsmasq (EulerOS-SA-2020-1097)"); script_summary(english:"Checks the rpm output for the updated package."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS host is missing a security update."); script_set_attribute(attribute:"description", value: "According to the version of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.(CVE-2019-14834) 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."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1097 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?169343ab"); script_set_attribute(attribute:"solution", value: "Update the affected dnsmasq package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/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:H/PR:N/UI:N/S:U/C:N/I:N/A:L"); 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:"patch_publication_date", value:"2020/02/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/24"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dnsmasq"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dnsmasq-utils"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0"); script_set_attribute(attribute:"stig_severity", value:"I"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp"); script_exclude_keys("Host/EulerOS/uvp_version"); 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/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0"); sp = get_kb_item("Host/EulerOS/sp"); if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "EulerOS UVP " + uvp); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu); flag = 0; pkgs = ["dnsmasq-2.76-5.h4.eulerosv2r7", "dnsmasq-utils-2.76-5.h4.eulerosv2r7"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dnsmasq"); }NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-2669.NASL description This update for dnsmasq fixes the following issues : Security issues fixed: 	 - CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) - CVE-2017-15107: Fixed a vulnerability in DNSSEC implementation. Processing of wildcard synthesized NSEC records may result improper validation for non-existance (bsc#1076958). Other issues addressed : - Included linux/sockios.h to get SIOCGSTAMP (bsc#1156543). - Removed cache size limit (bsc#1138743). - bsc#1152539: include config files from /etc/dnsmasq.d/*.conf . This update was imported from the SUSE:SLE-15-SP1:Update update project. last seen 2020-05-09 modified 2019-12-12 plugin id 131994 published 2019-12-12 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/131994 title openSUSE Security Update : dnsmasq (openSUSE-2019-2669) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2019-2669. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(131994); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/08"); script_cve_id("CVE-2017-15107", "CVE-2019-14834"); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"openSUSE Security Update : dnsmasq (openSUSE-2019-2669)"); script_summary(english:"Check for the openSUSE-2019-2669 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for dnsmasq fixes the following issues : Security issues fixed: 	 - CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) - CVE-2017-15107: Fixed a vulnerability in DNSSEC implementation. Processing of wildcard synthesized NSEC records may result improper validation for non-existance (bsc#1076958). Other issues addressed : - Included linux/sockios.h to get SIOCGSTAMP (bsc#1156543). - Removed cache size limit (bsc#1138743). - bsc#1152539: include config files from /etc/dnsmasq.d/*.conf . This update was imported from the SUSE:SLE-15-SP1:Update update project." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1076958" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1138743" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1152539" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1154849" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1156543" ); script_set_attribute( attribute:"solution", value:"Update the affected dnsmasq packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:novell:opensuse:dnsmasq"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dnsmasq-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dnsmasq-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dnsmasq-utils"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dnsmasq-utils-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/23"); script_set_attribute(attribute:"patch_publication_date", value:"2019/12/11"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/12"); script_set_attribute(attribute:"stig_severity", value:"I"); 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:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); 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/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.1", reference:"dnsmasq-2.78-lp151.5.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"dnsmasq-debuginfo-2.78-lp151.5.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"dnsmasq-debugsource-2.78-lp151.5.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"dnsmasq-utils-2.78-lp151.5.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"dnsmasq-utils-debuginfo-2.78-lp151.5.3.1") ) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc"); }NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-3188-1.NASL description This update for dnsmasq fixes the following issues : Security issues fixed : CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) CVE-2017-15107: Fixed a vulnerability in DNSSEC implementation. Processing of wildcard synthesized NSEC records may result improper validation for non-existance (bsc#1076958). Other issues addressed: Included linux/sockios.h to get SIOCGSTAMP (bsc#1156543). Removed cache size limit (bsc#1138743). Included config files from /etc/dnsmasq.d/*.conf (bsc#1152539). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-09 modified 2019-12-06 plugin id 131757 published 2019-12-06 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/131757 title SUSE SLED15 / SLES15 Security Update : dnsmasq (SUSE-SU-2019:3188-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2019:3188-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(131757); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/08"); script_cve_id("CVE-2017-15107", "CVE-2019-14834"); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"SUSE SLED15 / SLES15 Security Update : dnsmasq (SUSE-SU-2019:3188-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for dnsmasq fixes the following issues : Security issues fixed : CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) CVE-2017-15107: Fixed a vulnerability in DNSSEC implementation. Processing of wildcard synthesized NSEC records may result improper validation for non-existance (bsc#1076958). Other issues addressed: Included linux/sockios.h to get SIOCGSTAMP (bsc#1156543). Removed cache size limit (bsc#1138743). Included config files from /etc/dnsmasq.d/*.conf (bsc#1152539). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE 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://bugzilla.suse.com/show_bug.cgi?id=1076958" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1138743" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1152539" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1154849" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1156543" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-15107/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-14834/" ); # https://www.suse.com/support/update/announcement/2019/suse-su-20193188-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?d811f807" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-3188=1 SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-3188=1" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:novell:suse_linux:dnsmasq"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dnsmasq-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dnsmasq-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dnsmasq-utils"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dnsmasq-utils-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/23"); script_set_attribute(attribute:"patch_publication_date", value:"2019/12/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/06"); script_set_attribute(attribute:"stig_severity", value:"I"); 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:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp); if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-debugsource-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-utils-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-utils-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"dnsmasq-debugsource-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-debugsource-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-utils-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-utils-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-debuginfo-2.78-3.8.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"dnsmasq-debugsource-2.78-3.8.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dnsmasq"); }NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1530.NASL description According to the versions of the dnsmasq packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.(CVE-2019-14834) - A vulnerability was found in Dnsmasq last seen 2020-05-09 modified 2020-05-01 plugin id 136233 published 2020-05-01 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136233 title EulerOS Virtualization for ARM 64 3.0.2.0 : dnsmasq (EulerOS-SA-2020-1530) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(136233); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/08"); script_cve_id( "CVE-2017-15107", "CVE-2019-14834" ); script_xref(name:"IAVA", value:"2020-A-0194"); script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : dnsmasq (EulerOS-SA-2020-1530)"); script_summary(english:"Checks the rpm output for the updated packages."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS Virtualization for ARM 64 host is missing multiple security updates."); script_set_attribute(attribute:"description", value: "According to the versions of the dnsmasq packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.(CVE-2019-14834) - A vulnerability was found in Dnsmasq's implementation of DNSSEC. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.(CVE-2017-15107) 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."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1530 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6266d092"); script_set_attribute(attribute:"solution", value: "Update the affected dnsmasq packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:"patch_publication_date", value:"2020/04/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/01"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dnsmasq"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:dnsmasq-utils"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0"); script_set_attribute(attribute:"stig_severity", value:"I"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version"); 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/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0"); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu); flag = 0; pkgs = ["dnsmasq-2.76-5.h5", "dnsmasq-utils-2.76-5.h5"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dnsmasq"); }NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-0419-1.NASL description This update for dnsmasq fixes the following issues : Security issue fixed : CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) Other issue addressed: Removed cache size limit (bsc#1138743). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-09 modified 2020-02-20 plugin id 133837 published 2020-02-20 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133837 title SUSE SLED12 / SLES12 Security Update : dnsmasq (SUSE-SU-2020:0419-1) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2020-1_0-0265_DNSMASQ.NASL description An update of the dnsmasq package has been released. last seen 2020-05-09 modified 2020-01-29 plugin id 133301 published 2020-01-29 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133301 title Photon OS 1.0: Dnsmasq PHSA-2020-1.0-0265 NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-3189-1.NASL description This update for dnsmasq fixes the following issues : Security issues fixed : CVE-2019-14834: Fixed a memory leak which could have allowed to remote attackers to cause denial of service via DHCP response creation (bsc#1154849) CVE-2017-15107: Fixed a vulnerability in DNSSEC implementation. Processing of wildcard synthesized NSEC records may result improper validation for non-existance (bsc#1076958). Other issues addressed: Included linux/sockios.h to get SIOCGSTAMP (bsc#1156543). Removed cache size limit (bsc#1138743). bsc#1152539: include config files from /etc/dnsmasq.d/*.conf . Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-05-09 modified 2019-12-06 plugin id 131758 published 2019-12-06 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/131758 title SUSE SLED15 / SLES15 Security Update : dnsmasq (SUSE-SU-2019:3189-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1378.NASL description According to the version of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.(CVE-2019-14834) 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 2020-05-09 modified 2020-04-15 plugin id 135507 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/135507 title EulerOS 2.0 SP3 : dnsmasq (EulerOS-SA-2020-1378)
Redhat
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