IBM Rational ClearQuest 7.1 before 7.1.2.15, 8.0.0 before 8.0.0.12, and 8.0.1 before 8.0.1.5 allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Unspecified vulnerability in IBM Lotus Notes and Domino Server before 6.5.5, when running on AIX, allows attackers to cause a denial of service (deep recursion leading to stack overflow and crash) via long formulas.

INSO service in IBM DB2 Content Manager before 8.2 Fix Pack 10 on AIX allows attackers to cause a denial of service (application crash) via unknown attack vectors involving LZH files.

IBM MQ 8.0.0.0 through 8.0.0.10, 9.0.0.0 through 9.0.0.5, and 9.1.0.0 through 9.1.1 is vulnerable to a denial of service attack within the TLS key renegotiation function. IBM X-Force ID: 156564.

The command-port listener in IBM WebSphere MQ Internet Pass-Thru (MQIPT) 2.x before 2.1.0.1 allows remote attackers to cause a denial of service (remote-administration outage) via unspecified vectors.

The Fast Communications Manager (FCM) in IBM DB2 Enterprise Server Edition and Advanced Enterprise Server Edition 10.1 before FP3 and 10.5, when a multi-node configuration is used, allows remote attackers to cause a denial of service via vectors involving arbitrary data.

The Meeting Server in IBM Sametime 8.x through 8.5.2.1 and 9.x through 9.0.0.1 allows remote attackers to cause a denial of service (room unusability) by generating a large number of fictitious users to enter a meeting room.

Unknown vulnerability in Incoming Remote Command (iSeries Access for Windows Remote Command service) in IBM OS/400 R510, R520, and R530 allows attackers to cause a denial of service (IRC shutdown) via certain inputs.

NLSCCSTR.DLL in the web service in IBM Lotus Domino Server 6.5.1, 6.0.3, and possibly other versions allows remote attackers to cause a denial of service (deep recursion and nHTTP.exe process crash) via a long GET request containing UNICODE decimal value 430 characters, which causes the stack to be exhausted. NOTE: IBM has reported that it is unable to replicate this issue.

Cisco voice products, when running the IBM Director Agent on IBM servers before OS 2000.2.6, allows remote attackers to cause a denial of service (CPU consumption) via arbitrary packets to TCP port 14247, as demonstrated using port scanning.

Buffer overflow in IBM Lotus Notes 6.5.x before 6.5.3 and 6.0.x before 6.0.5 allows remote attackers to cause a denial of service (crash) via unknown vectors related to Java applets, as identified by KSPR62F4KN.

Web Access in Lotus Domino 6.5.1 allows remote attackers to cause a denial of service (server crash) via a large e-mail message, as demonstrated using a large image attachment.

WebSphere Edge Component Caching Proxy in WebSphere Edge Server 5.02, with the JunctionRewrite directive enabled, allows remote attackers to cause a denial of service via an HTTP GET request without any parameters.

IBM Security Guardium Big Data Intelligence 4.0 (SonarG) does not properly restrict the size or amount of resources that are requested or influenced by an actor. This weakness can be used to consume more resources than intended. IBM X-Force ID: 161417.

IBM API Connect 2018.1 through 2018.4.1.6 developer portal could allow an unauthorized user to cause a denial of service via an unprotected API. IBM X-Force ID: 162263.

IBM StoreIQ 7.6.0.0. through 7.6.0.18 could allow a remote attacker to cause a denial of service attack using repeated requests to the server. IBM X-Force ID: 158698.

Buffer overflow in Lotus Domino web server before R5.0.10, when logging to DOMLOG.NSF, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP Authenticate header containing certain non-ASCII characters.

Buffer overflow in the FC client for IBM AIX 4.3.x allows remote attackers to cause a denial of service (crash and core dump).

IBM AIX 4.3.3 and AIX 5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a flood of malformed TCP packets without any flags set, which prevents AIX from releasing the associated memory buffers.

IBM SecureWay Firewall before 4.2.2 performs extra processing before determining that a packet is invalid and dropping it, which allows remote attackers to cause a denial of service (resource exhaustion) via a flood of malformed TCP packets without any flags set.

IBM Websphere 4.0.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an HTTP request with long HTTP headers, such as "Host".

IBM Web Traffic Express Caching Proxy Server 3.6 and 4.x before 4.0.1.26 allows remote attackers to cause a denial of service (crash) via an HTTP request to helpout.exe with a missing HTTP version number, which causes ibmproxy.exe to crash.

WebSeal in IBM Tivoli SecureWay Policy Director 3.8 allows remote attackers to cause a denial of service (crash) via a URL that ends in %2e.

IBM AIX 430 does not properly unlock IPPMTU_LOCK, which allows remote attackers to cause a denial of service (hang) via Path Maximum Transmit Unit (PMTU) IP packets.

IBM DB2 7.0 allows a remote attacker to cause a denial of service (crash) via a single byte to (1) db2ccs.exe on port 6790, or (2) db2jds.exe on port 6789.

Hursley Software Laboratories Consumer Transaction Framework (HSLCTF) HTTP object allows remote attackers to cause a denial of service (crash) via an extremely long HTTP request.

The web administration interface for IBM AS/400 Firewall allows remote attackers to cause a denial of service via an empty GET request.

OS2/Warp 4.5 FTP server allows remote attackers to cause a denial of service via a long username.

Buffer overflow in the TCP/IP listener in IBM DB2 Universal Database (UDB) before 8.1 FixPak 12 allows remote attackers to cause a denial of service (application crash) via a long MGRLVLLS message inside of an EXCSAT message when establishing a connection.

Lotus Domino Web Server (nhttp.exe) before 6.0.1 allows remote attackers to cause a denial of service via a "Fictionary Value Field POST request" as demonstrated using the s_Validation form with a long, unknown parameter name.

Engenio/LSI Logic storage controllers, as used in products such as Storagetek D280, and IBM DS4100 (formerly FastT 100) and Brocade SilkWorm Switches, allow remote attackers to cause a denial of service (freeze and possible data corruption) via crafted TCP packets.

IBM Tivoli Directory Server 6.0 allows remote attackers to cause a denial of service (crash) via a crafted LDAP request, as demonstrated by test 2532 in the ProtoVer Sample LDAP test suite.

AIX SNMP server snmpd allows remote attackers to cause a denial of service via a RST during the TCP connection.

IBM Websphere/NetCommerce3 3.1.2 allows remote attackers to cause a denial of service by directly calling the macro.d2w macro with a long string of %0a characters.

Buffer overflow in Lotus Notes LDAP (NLDAP) allows an attacker to conduct a denial of service through the ldap_search request.

Lotus Domino server 5.0.9a and earlier allows remote attackers to cause a denial of service by exhausting the number of working threads via a large number of HTTP requests for (1) an MS-DOS device name and (2) an MS-DOS device name with a large number of characters appended to the device name.

IBM UniVerse with UV/ODBC allows attackers to cause a denial of service (client crash or server CPU consumption) via a query with an invalid link between tables, possibly via a buffer overflow.

The LCF component (lcfd) in IBM Tivoli Management Framework Endpoint allows remote attackers to cause a denial of service (process exit and connection loss) by connecting to LCF and ending the connection without sending any data.

Format string vulnerability in Lotus Domino 6.0.x before 6.0.5 and 6.5.x before 6.5.4 allows remote attackers to cause a denial of service via the Notes protocol (NRPC).

Lotus Domino Web Server (nhttp.exe) before 6.0.1 allows remote attackers to cause a denial of service via an incomplete POST request, as demonstrated using the h_PageUI form.

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume all available memory. IBM X-Force ID: 172125.

IBM HACMP 4.4 allows remote attackers to cause a denial of service via a completed TCP connection to HACMP ports (e.g., using a port scan) that does not send additional data, which causes a failure in snmpd.

An attacker can write to syslog files from any location, causing a denial of service by filling up the logs, and hiding activities.

inetd in AIX 4.1.5 dynamically assigns a port N when starting ttdbserver (ToolTalk server), but also inadvertently listens on port N-1 without passing control to ttdbserver, which allows remote attackers to cause a denial of service via a large number of connections to port N-1, which are not properly closed by inetd.

IBM WebSphere Commerce 7.0 and 8.0 contains an unspecified vulnerability in Marketing ESpot's that could cause a denial of service. IBM X-Force ID: 131779.

IBM i OSPF 6.1, 7.1, 7.2, and 7.3 is vulnerable when a rogue router spoofs its origin. Routing tables are affected by a missing LSA, which may lead to loss of connectivity. IBM X-Force ID: 128379.

kuddb2 in Tivoli Monitoring for DB2, as distributed in IBM DB2 9.7 FP1 on Linux, allows remote attackers to cause a denial of service (daemon crash) via a certain byte sequence.

IBM Sterling B2B Integrator 5.0 and 5.1 allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted HTTP (1) Range or (2) Request-Range header.

IBM Sterling External Authentication Server and IBM Sterling Secure Proxy 6.0.3.0, 6.0.2.0, and 3.4.3.2 could allow a remote user to consume resources causing a denial of service due to a resource leak. IBM X-Force ID: 219395.

IBM MQ Appliance 9.2 CD and 9.2 LTS are vulnerable to a denial of service in the Login component of the application which could allow an attacker to cause a drop in performance.