Rolled back Windows multithreading crash fix, as upgrading from Python v3.9 to v3.11 may have fixed the root cause. (#152)

This commit is contained in:
Joe Testa 2023-04-26 21:55:40 -04:00
parent 1eab4ab0e6
commit 0074fcc1af
3 changed files with 14 additions and 15 deletions

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@ -189,7 +189,6 @@ For convenience, a web front-end on top of the command-line tool is available at
- JSON output now includes recommendations and CVE data.
- Mixed host key/CA key types (i.e.: RSA host keys signed with ED25519 CAs, etc.) are now properly handled.
- Warnings are now printed for 2048-bit moduli.
- Fixed Windows-specific crash when multiple threads were used.
- SHA-1 algorithms now cause failures.
- CBC mode ciphers are now warnings instead of failures.
- Generic failure/warning messages replaced with more specific reasons (i.e.: 'using weak cipher' => 'using broken RC4 cipher').

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@ -49,8 +49,8 @@ if [[ "$(python -V)" != "Python 3."* ]]; then
fi
# Install/update package dependencies.
echo "Installing/updating pyinstaller, colorama, and idna packages..."
pip install -U pyinstaller colorama idna
echo "Installing/updating pyinstaller and colorama packages..."
pip install -U pyinstaller colorama
echo
# Prompt for the version to release.

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@ -62,7 +62,7 @@ from ssh_audit.utils import Utils
from ssh_audit.versionvulnerabilitydb import VersionVulnerabilityDB
no_idna_workaround = False
# no_idna_workaround = False
# Only import colorama under Windows. Other OSes can natively handle terminal colors.
if sys.platform == 'win32':
@ -73,12 +73,12 @@ if sys.platform == 'win32':
pass
# This is a workaround for a Python bug that causes a crash on Windows when multiple threads are used (see https://github.com/python/cpython/issues/73474). Importing the idna module and using it in a no-op seems to fix the issue. Otherwise, if idna isn't available at run-time, force single threaded scans.
try:
import idna # noqa: F401
''.encode('idna')
except ImportError:
no_idna_workaround = True
# try:
# import idna # noqa: F401
#
# ''.encode('idna')
# except ImportError:
# no_idna_workaround = True
def usage(uout: OutputBuffer, err: Optional[str] = None) -> None:
@ -766,13 +766,13 @@ def process_commandline(out: OutputBuffer, args: List[str], usage_cb: Callable[.
aconf.target_file = a
# If we're on Windows, and we can't use the idna workaround, force only one thread to be used (otherwise a crash would occur).
if no_idna_workaround:
print("\nWARNING: the idna module was not found on this system, thus only single-threaded scanning will be done (this is a workaround for this Windows-specific crash: https://github.com/python/cpython/issues/73474). Multi-threaded scanning can be enabled by installing the idna module (pip install idna).\n")
aconf.threads = 1
# if no_idna_workaround:
# print("\nWARNING: the idna module was not found on this system, thus only single-threaded scanning will be done (this is a workaround for this Windows-specific crash: https://github.com/python/cpython/issues/73474). Multi-threaded scanning can be enabled by installing the idna module (pip install idna).\n")
# aconf.threads = 1
elif o == '--threads':
aconf.threads = int(a)
if no_idna_workaround:
aconf.threads = 1
# if no_idna_workaround:
# aconf.threads = 1
elif o in ('-L', '--list-policies'):
aconf.list_policies = True
elif o == '--lookup':