Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler. Number of rules (primarily dangerous function names) in C/C++ ruleset: 223 Examining data/xeus-0.25.0/example/src/custom_interpreter.cpp Examining data/xeus-0.25.0/example/src/custom_interpreter.hpp Examining data/xeus-0.25.0/example/src/main.cpp Examining data/xeus-0.25.0/include/xeus/xauthentication.hpp Examining data/xeus-0.25.0/include/xeus/xcomm.hpp Examining data/xeus-0.25.0/include/xeus/xcontrol_messenger.hpp Examining data/xeus-0.25.0/include/xeus/xdap_tcp_client.hpp Examining data/xeus-0.25.0/include/xeus/xdebugger.hpp Examining data/xeus-0.25.0/include/xeus/xdebugger_base.hpp Examining data/xeus-0.25.0/include/xeus/xeus.hpp Examining data/xeus-0.25.0/include/xeus/xguid.hpp Examining data/xeus-0.25.0/include/xeus/xhistory_manager.hpp Examining data/xeus-0.25.0/include/xeus/xinput.hpp Examining data/xeus-0.25.0/include/xeus/xinterpreter.hpp Examining data/xeus-0.25.0/include/xeus/xjson.hpp Examining data/xeus-0.25.0/include/xeus/xkernel.hpp Examining data/xeus-0.25.0/include/xeus/xkernel_configuration.hpp Examining data/xeus-0.25.0/include/xeus/xlogger.hpp Examining data/xeus-0.25.0/include/xeus/xmessage.hpp Examining data/xeus-0.25.0/include/xeus/xmiddleware.hpp Examining data/xeus-0.25.0/include/xeus/xserver.hpp Examining data/xeus-0.25.0/include/xeus/xserver_control_main.hpp Examining data/xeus-0.25.0/include/xeus/xserver_shell_main.hpp Examining data/xeus-0.25.0/include/xeus/xserver_zmq.hpp Examining data/xeus-0.25.0/include/xeus/xserver_zmq_split.hpp Examining data/xeus-0.25.0/include/xeus/xsystem.hpp Examining data/xeus-0.25.0/src/xauthentication.cpp Examining data/xeus-0.25.0/src/xcomm.cpp Examining data/xeus-0.25.0/src/xcontrol.hpp Examining data/xeus-0.25.0/src/xcontrol_messenger.cpp Examining data/xeus-0.25.0/src/xdebugger.cpp Examining data/xeus-0.25.0/src/xguid.cpp Examining data/xeus-0.25.0/src/xheartbeat.cpp Examining data/xeus-0.25.0/src/xheartbeat.hpp Examining data/xeus-0.25.0/src/xhistory_manager.cpp Examining data/xeus-0.25.0/src/xin_memory_history_manager.cpp Examining data/xeus-0.25.0/src/xin_memory_history_manager.hpp Examining data/xeus-0.25.0/src/xinput.cpp Examining data/xeus-0.25.0/src/xinterpreter.cpp Examining data/xeus-0.25.0/src/xkernel.cpp Examining data/xeus-0.25.0/src/xkernel_configuration.cpp Examining data/xeus-0.25.0/src/xkernel_core.cpp Examining data/xeus-0.25.0/src/xkernel_core.hpp Examining data/xeus-0.25.0/src/xlogger.cpp Examining data/xeus-0.25.0/src/xlogger_impl.cpp Examining data/xeus-0.25.0/src/xlogger_impl.hpp Examining data/xeus-0.25.0/src/xmessage.cpp Examining data/xeus-0.25.0/src/xmock_interpreter.cpp Examining data/xeus-0.25.0/src/xmock_interpreter.hpp Examining data/xeus-0.25.0/src/xpublisher.hpp Examining data/xeus-0.25.0/src/xserver.cpp Examining data/xeus-0.25.0/src/xserver_control_main.cpp Examining data/xeus-0.25.0/src/xserver_shell_main.cpp Examining data/xeus-0.25.0/src/xserver_zmq_split.cpp Examining data/xeus-0.25.0/src/xshell.hpp Examining data/xeus-0.25.0/src/xstring_utils.hpp Examining data/xeus-0.25.0/src/xsystem.cpp Examining data/xeus-0.25.0/src/xtrivial_messenger.cpp Examining data/xeus-0.25.0/src/xtrivial_messenger.hpp Examining data/xeus-0.25.0/src/xzmq_messenger.hpp Examining data/xeus-0.25.0/src/xcontrol.cpp Examining data/xeus-0.25.0/src/xdap_tcp_client.cpp Examining data/xeus-0.25.0/src/xdebugger_base.cpp Examining data/xeus-0.25.0/src/xmiddleware.cpp Examining data/xeus-0.25.0/src/xpublisher.cpp Examining data/xeus-0.25.0/src/xserver_zmq.cpp Examining data/xeus-0.25.0/src/xshell.cpp Examining data/xeus-0.25.0/src/xzmq_messenger.cpp Examining data/xeus-0.25.0/test/main.cpp Examining data/xeus-0.25.0/test/main_control.cpp Examining data/xeus-0.25.0/test/main_shell.cpp Examining data/xeus-0.25.0/test/test_interpreter.cpp Examining data/xeus-0.25.0/test/test_interpreter.hpp Examining data/xeus-0.25.0/test/test_unit_kernel.cpp Examining data/xeus-0.25.0/test/test_xin_memory_history_manager.cpp FINAL RESULTS: data/xeus-0.25.0/src/xkernel.cpp:115:40: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. if(p_logger == nullptr || std::getenv("XEUS_LOG") == nullptr) data/xeus-0.25.0/src/xsystem.cpp:48:35: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. const char* tmpdir = std::getenv("TMPDIR"); data/xeus-0.25.0/src/xsystem.cpp:49:32: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. const char* tmp = std::getenv("TMP"); data/xeus-0.25.0/src/xsystem.cpp:50:36: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. const char* tempdir = std::getenv("TEMPDIR"); data/xeus-0.25.0/src/xsystem.cpp:51:33: [3] (buffer) getenv: Environment variables are untrustable input if they can be set by an attacker. They can have any content and length, and the same variable can be set more than once (CWE-807, CWE-20). Check environment variables carefully before using them. const char* temp = std::getenv("TEMP"); data/xeus-0.25.0/include/xeus/xcomm.hpp:91:14: [2] (misc) open: Check when opening files - can an attacker redirect it (via symlinks), force the opening of special file type (e.g., device files), move things around to create a race condition, control its ancestors, or change its contents? (CWE-362). void open(nl::json metadata, nl::json data, buffer_sequence buffers); data/xeus-0.25.0/include/xeus/xcomm.hpp:355:24: [2] (misc) open: Check when opening files - can an attacker redirect it (via symlinks), force the opening of special file type (e.g., device files), move things around to create a race condition, control its ancestors, or change its contents? (CWE-362). inline void xcomm::open(nl::json metadata, nl::json data, buffer_sequence buffers) data/xeus-0.25.0/src/xdebugger_base.cpp:128:16: [2] (misc) open: Check when opening files - can an attacker redirect it (via symlinks), force the opening of special file type (e.g., device files), move things around to create a race condition, control its ancestors, or change its contents? (CWE-362). fs.open(next_file_name, std::ios::out); data/xeus-0.25.0/src/xkernel.cpp:47:9: [2] (buffer) char: Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length. char username[UNLEN + 1]; data/xeus-0.25.0/src/xmiddleware.cpp:93:9: [2] (buffer) char: Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length. char opt[32]; data/xeus-0.25.0/src/xsystem.cpp:40:9: [2] (buffer) char: Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length. char char_path[MAX_PATH]; data/xeus-0.25.0/src/xsystem.cpp:28:25: [1] (buffer) strlen: Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). std::size_t s = strlen(path); ANALYSIS SUMMARY: Hits = 12 Lines analyzed = 7773 in approximately 0.20 seconds (38121 lines/second) Physical Source Lines of Code (SLOC) = 5613 Hits@level = [0] 28 [1] 1 [2] 6 [3] 5 [4] 0 [5] 0 Hits@level+ = [0+] 40 [1+] 12 [2+] 11 [3+] 5 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 7.12631 [1+] 2.13789 [2+] 1.95974 [3+] 0.890789 [4+] 0 [5+] 0 Dot directories skipped = 1 (--followdotdir overrides) Minimum risk level = 1 Not every hit is necessarily a security vulnerability. There may be other security vulnerabilities; review your code! See 'Secure Programming HOWTO' (https://dwheeler.com/secure-programs) for more information.