Vulnerabilities > CVE-2019-18904 - Resource Exhaustion vulnerability in Opensuse Rmt-Server 2.5.23.26.1/2.5.23.9.1/2.5.2Lp151.2.9.1
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
A Uncontrolled Resource Consumption vulnerability in rmt of SUSE Linux Enterprise High Performance Computing 15-ESPOS, SUSE Linux Enterprise High Performance Computing 15-LTSS, SUSE Linux Enterprise Module for Public Cloud 15-SP1, SUSE Linux Enterprise Module for Server Applications 15, SUSE Linux Enterprise Module for Server Applications 15-SP1, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 15; openSUSE Leap 15.1 allows remote attackers to cause DoS against rmt by requesting migrations. This issue affects: SUSE Linux Enterprise High Performance Computing 15-ESPOS rmt-server versions prior to 2.5.2-3.26.1. SUSE Linux Enterprise High Performance Computing 15-LTSS rmt-server versions prior to 2.5.2-3.26.1. SUSE Linux Enterprise Module for Public Cloud 15-SP1 rmt-server versions prior to 2.5.2-3.9.1. SUSE Linux Enterprise Module for Server Applications 15 rmt-server versions prior to 2.5.2-3.26.1. SUSE Linux Enterprise Module for Server Applications 15-SP1 rmt-server versions prior to 2.5.2-3.9.1. SUSE Linux Enterprise Server 15-LTSS rmt-server versions prior to 2.5.2-3.26.1. SUSE Linux Enterprise Server for SAP 15 rmt-server versions prior to 2.5.2-3.26.1. openSUSE Leap 15.1 rmt-server versions prior to 2.5.2-lp151.2.9.1.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 4 | |
| Application | 2 | |
| OS | 5 | |
| OS | 1 |
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 SuSE Local Security Checks NASL id SUSE_SU-2020-0260-1.NASL description This update for rmt-server to version 2.5.2 fixes the following issues : Security issue fixed : CVE-2019-18904: Fixed a denial of service in the offline migration (bsc#1160922). Non-security issue fixed : Relaxed systemd units dependencies (bsc#1160673) Added more verbose error reporting for SCC API errors (bsc#1157119) Fixed system listing when architecture is not well referenced (bsc#1141122) 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 2020-04-12 modified 2020-01-31 plugin id 133389 published 2020-01-31 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133389 title SUSE SLES15 Security Update : rmt-server (SUSE-SU-2020:0260-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-1179-1.NASL description This update for rmt-server to version 2.5.7 fixes the following issues : Security issues fixed : CVE-2019-18904: Fixed offline migrations (bsc#1160922). Fixed a local denial of service (bsc#1165548). Non-security issues fixed : Align supported subscription types with SCC (bsc#1168554). Fix migrations in case adding migration_extra column failed (bsc#1162296). Fix dependency to removed boot_cli_i18n file (bsc#1136020) 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 2020-05-15 modified 2020-05-11 plugin id 136464 published 2020-05-11 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136464 title SUSE SLES15 Security Update : rmt-server (SUSE-SU-2020:1179-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2020-235.NASL description This update for rmt-server to version 2.5.2 fixes the following issues : Security issue fixed : - CVE-2019-18904: Fixed a denial of service in the offline migration (bsc#1160922). Non-security issue fixed : - Relaxed systemd units dependencies (bsc#1160673) - Added more verbose error reporting for SCC API errors (bsc#1157119) - Fixed system listing when architecture is not well referenced (bsc#1141122) This update was imported from the SUSE:SLE-15-SP1:Update update project. last seen 2020-04-12 modified 2020-02-20 plugin id 133828 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/133828 title openSUSE Security Update : rmt-server (openSUSE-2020-235) NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-0278-1.NASL description This update for rmt-server to version 2.5.2 fixes the following issues : Security issue fixed : CVE-2019-18904: Fixed a denial of service in the offline migration (bsc#1160922). Non-security issue fixed : Relaxed systemd units dependencies (bsc#1160673) Added more verbose error reporting for SCC API errors (bsc#1157119) Fixed system listing when architecture is not well referenced (bsc#1141122) 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 2020-04-12 modified 2020-02-03 plugin id 133438 published 2020-02-03 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133438 title SUSE SLES15 Security Update : rmt-server (SUSE-SU-2020:0278-1)