Vulnerabilities > CVE-2012-0024 - Resource Exhaustion vulnerability in Maradns
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
MaraDNS before 1.3.07.12 and 1.4.x before 1.4.08 computes hash values for DNS data without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted queries with the Recursion Desired (RD) bit set.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 10 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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.
- Inducing Account Lockout An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
- Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS)) XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201202-03.NASL description The remote host is affected by the vulnerability described in GLSA-201202-03 (MaraDNS: Denial of Service) MaraDNS does not properly randomize hash functions to protect against hash collision attacks. Impact : A remote attacker could send many specially crafted DNS recursive queries, possibly resulting in 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 58099 published 2012-02-23 reporter This script is Copyright (C) 2012-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/58099 title GLSA-201202-03 : MaraDNS: Denial of Service code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201202-03. # # The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(58099); script_version("1.6"); script_cvs_date("Date: 2018/07/11 17:09:26"); script_cve_id("CVE-2012-0024"); script_bugtraq_id(51225); script_xref(name:"GLSA", value:"201202-03"); script_name(english:"GLSA-201202-03 : MaraDNS: Denial of Service"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-201202-03 (MaraDNS: Denial of Service) MaraDNS does not properly randomize hash functions to protect against hash collision attacks. Impact : A remote attacker could send many specially crafted DNS recursive queries, possibly resulting in a Denial of Service condition. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201202-03" ); script_set_attribute( attribute:"solution", value: "All MaraDNS users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=net-dns/maradns-1.4.09'" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:gentoo:linux:maradns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2012/02/22"); script_set_attribute(attribute:"plugin_publication_date", value:"2012/02/23"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"net-dns/maradns", unaffected:make_list("ge 1.4.09"), vulnerable:make_list("lt 1.4.09"))) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get()); else security_warning(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "MaraDNS"); }NASL family DNS NASL id MARADNS_1_4_10.NASL description According to its self-reported version number, the MaraDNS server running on the remote host is affected by a hash collision issue when large amounts of specially crafted queries with the Recursion Desired (RD) bit set are sent to the remote server. This issue could allow a remote attacker to crash the DNS server, resulting in a denial of service. last seen 2020-06-01 modified 2020-06-02 plugin id 73480 published 2014-04-11 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/73480 title MaraDNS < 1.3.07.14 / 1.4.x < 1.4.10 Hash Collision Form Parameter Remote DoS code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(73480); script_version("1.3"); script_cvs_date("Date: 2018/07/14 1:59:35"); script_cve_id("CVE-2011-5055", "CVE-2012-0024"); script_bugtraq_id(51225); script_name(english:"MaraDNS < 1.3.07.14 / 1.4.x < 1.4.10 Hash Collision Form Parameter Remote DoS"); script_summary(english:"Checks version of MaraDNS server"); script_set_attribute(attribute:"synopsis", value: "The DNS server running on the remote host is affected by a denial of service vulnerability."); script_set_attribute(attribute:"description", value: "According to its self-reported version number, the MaraDNS server running on the remote host is affected by a hash collision issue when large amounts of specially crafted queries with the Recursion Desired (RD) bit set are sent to the remote server. This issue could allow a remote attacker to crash the DNS server, resulting in a denial of service."); # Release of the version with the actual solution script_set_attribute(attribute:"see_also", value:"http://samiam.org/blog/20120113.html"); script_set_attribute(attribute:"see_also", value:"http://samiam.org/blog/20111230.html"); script_set_attribute(attribute:"see_also", value:"http://samiam.org/blog/20111229.html"); script_set_attribute(attribute:"see_also", value:"http://maradns.samiam.org/security.html"); script_set_attribute(attribute:"solution", value:"Upgrade to MaraDNS version 1.3.07.14 / 1.4.10 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:"vuln_publication_date", value:"2011/12/29"); script_set_attribute(attribute:"patch_publication_date", value:"2012/01/13"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/11"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:maradns:maradns"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"DNS"); script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc."); script_dependencies("maradns_version.nasl"); script_require_keys("maradns/version", "maradns/num_ver", "Settings/ParanoidReport"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); version = get_kb_item_or_exit("maradns/version"); num_ver = get_kb_item_or_exit("maradns/num_ver"); if (report_paranoia < 2) audit(AUDIT_PARANOID); port = 53; fix = NULL; # < 1.3.07.14 if (version =~ "^(0|1\.[0-3])\." && ver_compare(ver:num_ver, fix:"1.3.07.14", strict:FALSE) == -1) fix = "1.3.07.14"; # 1.4.x < 1.4.10 else if (version =~ "^1\.4\." && ver_compare(ver:num_ver, fix:"1.4.10", strict:FALSE) == -1) fix = "1.4.10"; else audit(AUDIT_LISTEN_NOT_VULN, "MaraDNS", port, version, "UDP"); if (report_verbosity > 0) { report = '\n Installed version : ' + version + '\n Fixed version : ' + fix + '\n'; security_warning(port:port, proto:"udp", extra:report); } else security_warning(port:port, proto:"udp");