Claude/security audit dependencies 01 bm d3cw m2 gwhcxfd8 q82jd l #32
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This commit addresses critical security vulnerabilities identified during a comprehensive security audit of the libsqrl codebase. ## Security Fixes (CWE-226, CWE-200, CWE-119) ### Secure Memory Clearing - Implemented secure memory clearing functions in sqrl_secure.c - Added sodium_memzero() calls to clear temporary key buffers in crypt.c - Fixed memory leaks of sensitive cryptographic material - Clear signature buffers after use in client_protocol.c - Securely wipe transaction strings before freeing ### Buffer Overflow Prevention (CWE-119) - Replaced unsafe strcpy() with sqrl_secure_strcpy() in: - client_protocol.c: Challenge/URL/SIN parsing - server.c: User blob operations - uri.c: URL parsing operations - client.c: Alternative identity handling - All string operations now include bounds checking ### Sensitive Data Exposure (CWE-200) - Clear URI data before freeing (sqrl_uri_free) - Clear transaction strings before freeing - Clear altIdentity tokens before freeing - Clear user blob data before freeing ## Dependency Updates ### libsodium - Pinned to version 1.0.20 (was: unpinned "stable" branch) - Ensures reproducible builds and known security characteristics ### CMake - Updated minimum from 2.8 to 3.10 - Required for CMake 4.0+ compatibility - Avoids deprecation warnings ### Build Configuration - Changed default build type to Release (was Debug) - Added compiler hardening flags: - -Wall -Wextra -Wformat-security - -fstack-protector-strong - -D_FORTIFY_SOURCE=2 - Added linker hardening: -Wl,-z,relro,-z,now ## Test Coverage - Added secure_test.c for testing secure memory functions - Tests for sqrl_secure_strcpy(), sqrl_secure_strcat() - Tests for sqrl_secure_free_string(), sqrl_secure_memzero() - Security parameter validation tests - Integrated into CTest framework ## CI/CD Pipeline - Added GitHub Actions workflow (.github/workflows/ci.yml) - Multi-OS testing (Ubuntu latest, 22.04) - Both Release and Debug build testing - Static analysis with cppcheck - Memory sanitizer testing (AddressSanitizer) - Security vulnerability scanning - Dependency version verification - Dangerous function detection ## Documentation - Added comprehensive SECURITY_AUDIT.md report - Detailed vulnerability findings with CWE references - Upgrade path documentation for all dependencies - Remediation plan with priorities - Compliance notes (OWASP Top 10) Files modified: - CMakeLists.txt: Dependency updates, hardening flags - src/crypto/crypt.c: Secure key buffer clearing - src/client_protocol.c: Secure string ops, buffer clearing - src/client.c: Secure altIdentity handling - src/server.c: Secure user blob operations - src/transaction.c: Secure transaction cleanup - src/uri.c: Secure URI parsing and cleanup New files: - src/sqrl_secure.h: Secure utility function declarations - src/sqrl_secure.c: Platform-aware secure implementations - src/test/secure_test.c: Security function test suite - .github/workflows/ci.yml: CI/CD pipeline - SECURITY_AUDIT.md: Comprehensive audit report
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