Collected research

Exploiting Inter-Process Communication in SAP's HTTP Server

Martin Doyhenard · i.blackhat.com

SAP's Internet Communication Manager moves HTTP messages to its Java/ABAP backend through fixed-size shared-memory buffers. Oversized requests and a use-after-free on those buffers let an unauthenticated attacker desynchronise the pipeline, smuggle requests, steal other users' sessions and cookies, poison the internal cache, and reach memory corruption for code execution.

Record

Researcher

Martin Doyhenard

Published by

i.blackhat.com

Format

Whitepaper

Topic

HTTP

In the archive

• Collected in the 2022 research round

Related sources

• Martin Doyhenard - Exploiting Inter-Process Communication in SAP’s HTTP Server - Ekoparty 2022
• Internal Server Error: Exploiting Inter-Process Communication in SAP's HTTP Server

Tags

• request-smuggling
• desync
• cache-poisoning
• rce
• http
• proxy
• java
• cve

This page is the archive's own catalogue record. The research is the work of Martin Doyhenard, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on 11 August 2026.