Using LLMs to tune Static Analysis Rules

Abstract On July 29th, 2027 Gemini 3.1 Pro (Low) was used to generate static analysis rules for Opengrep targeting OWASP’s Python Benchmark SAST program. Generated static analysis rules were made to find path traversal findings. Generated rules lead to a an improvement of True Positive and False Positive ratio from 3.08%:1.94% to 41.54%:1.94% against OWAPS’s […]

CVE-2021-29084: Exploiting CRLF Header Injection in Synology NAS for Unauthenticated File Downloads

Recently our CVE-2021-29084 went public [ZDI Link]. We thought it would be fun to share our disclosure notes. The Synology DS418play NAS contained an unauthenticated accessible endpoint vulnerable to HTTP header injection. Due to nginx’s configuration, the X-Accel-Redirect header can be used download files which are shared via SMB. Note the finding requires knowledge of […]

Unauthenticated File Deletion in Synology NAS DS418play

The Synology DS418play NAS  contained an unauthenticated endpoint which can be leveraged to delete arbitrary files. The exploit can be used to bypass account login throttling by deleting a database file containing banned IP addresses. The finding could potentially lead to soft bricking the device too, such as by deleting system files. The unauthenticated OTP admin […]