GrepRules
Sign inPublish rule
Explore

Rule Explorer

Search the public rule index by CVE, GHSA, CWE, language, framework, author, or rule slug. Filter by language, framework, severity, confidence, license, and validation status.

Public rules
4797
Downloads
12.1M
Verified
4797
Authors
2
Search the rule indexUse CVE, GHSA, CWE, language, framework, package, or rule slug.
1 rules matched. Showing 1 loaded rules.
Publish rule
CVE-2023-45236: Predictable Tcp Isncve-2023-45236-predictable-tcp-isn

Predictable TCP Initial Sequence Number (ISN) generation detected. Generate ISNs using a cryptographically secure pseudo-random number generator (CSPRNG) or a secure hash that incorporates connection parameters and a secret key, as recommended by RFC 9293. Incrementing a variable to compute the ISN makes it predictable, rendering the stack susceptible to TCP

CCVE-2023-45236CWE-330CWE-502
by Provallyupdated 2026-06-12Apache-2.0
3.3K0 direct3.3K via packs
72
All matching rules loaded.