IBM : Security Vulnerabilities, CVEs, Published In 2003 (Denial of service)

Buffer overflow in nslookup in IBM AIX may allow attackers to cause a denial of service or execute arbitrary code.

Buffer overflow in Web Retriever client for Lotus Notes/Domino R4.5 through R6 allows remote malicious web servers to cause a denial of service (crash) via a long HTTP status line.

Multiple buffer overflows in Lotus Domino Web Server before 6.0.1 allow remote attackers to cause a denial of service or execute arbitrary code via (1) the s_ViewName option in the PresetFields parameter for iNotes, (2) the Foldername option in the PresetFields parameter for iNotes, or (3) a long Host header, which is inserted into a long Location header and used during a redirect operation.

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.

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.

Format string vulnerability in lpd in the bos.rte.printers fileset for AIX 4.3 through 5.2, with debug enabled, allows local users to cause a denial of service (crash) or gain root privileges.

The DB2 Discovery Service for IBM DB2 before FixPak 10a allows remote attackers to cause a denial of service (crash) via a long packet to UDP port 523.

BlackICE Defender 2.9.cap and Server Protection 3.5.cdf, when configured to automatically block attacks, allows remote attackers to block IP addresses and cause a denial of service via spoofed packets.