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Details: https://nvd.nist.gov/vuln/detail/CVE-2023-24816 Pick the patch referenced by the NVD report. Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
95 lines
3.5 KiB
Diff
95 lines
3.5 KiB
Diff
From 06db417ff15192d73ddac4bf0e2f20579d47b2e0 Mon Sep 17 00:00:00 2001
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From: Konstantin Weddige <konstantin.weddige@lutrasecurity.com>
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Date: Sat, 3 Dec 2022 19:14:09 +0100
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Subject: [PATCH] Fix CVE-2023-24816 by removing legacy code.
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Remove legacy code that might trigger a CVE.
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Currently set_term_title is only called with (semi-)trusted input that
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contain the current working directory of the current IPython session. If
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an attacker can control directory names, and manage to get a user cd
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into this directory the attacker can execute arbitrary commands
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contained in the folder names.
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Example:
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- On a windows machine where python is built without _ctypes, create
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a folder called && echo "pwn" > pwn.txt. This can be done by for
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example cloning a git repository.
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- call toggled_set_term_title(True), (or have the preference to
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true)
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- Open IPython and cd into this directory.
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- the folder now contain a pwn.txt, with pwn as content, despite the
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user not asking for any code execution.
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Workaround:
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Set the configuration option
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c.TerminalInteractiveShell.term_title_format='IPython' (or to any
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other fixed, safe string).
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CVE: CVE-2023-24816
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Upstream-Status: Backport [https://github.com/ipython/ipython/commit/385d69325319a5972ee9b5983638e3617f21cb1f]
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Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
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---
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IPython/__init__.py | 2 +-
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IPython/utils/terminal.py | 32 ++++++++------------------------
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2 files changed, 9 insertions(+), 25 deletions(-)
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diff --git a/IPython/__init__.py b/IPython/__init__.py
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index e12da90..20e6e48 100644
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--- a/IPython/__init__.py
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+++ b/IPython/__init__.py
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@@ -62,7 +62,7 @@ __version__ = release.version
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version_info = release.version_info
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# list of CVEs that should have been patched in this release.
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# this is informational and should not be relied upon.
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-__patched_cves__ = {"CVE-2022-21699"}
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+__patched_cves__ = {"CVE-2022-21699", "CVE-2023-24816"}
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def embed_kernel(module=None, local_ns=None, **kwargs):
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diff --git a/IPython/utils/terminal.py b/IPython/utils/terminal.py
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index 49fd3fe..d884799 100644
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--- a/IPython/utils/terminal.py
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+++ b/IPython/utils/terminal.py
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@@ -79,30 +79,14 @@ if os.name == 'posix':
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_set_term_title = _set_term_title_xterm
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_restore_term_title = _restore_term_title_xterm
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elif sys.platform == 'win32':
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- try:
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- import ctypes
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-
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- SetConsoleTitleW = ctypes.windll.kernel32.SetConsoleTitleW
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- SetConsoleTitleW.argtypes = [ctypes.c_wchar_p]
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-
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- def _set_term_title(title):
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- """Set terminal title using ctypes to access the Win32 APIs."""
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- SetConsoleTitleW(title)
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- except ImportError:
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- def _set_term_title(title):
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- """Set terminal title using the 'title' command."""
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- global ignore_termtitle
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-
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- try:
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- # Cannot be on network share when issuing system commands
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- curr = os.getcwd()
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- os.chdir("C:")
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- ret = os.system("title " + title)
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- finally:
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- os.chdir(curr)
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- if ret:
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- # non-zero return code signals error, don't try again
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- ignore_termtitle = True
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+ import ctypes
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+
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+ SetConsoleTitleW = ctypes.windll.kernel32.SetConsoleTitleW
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+ SetConsoleTitleW.argtypes = [ctypes.c_wchar_p]
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+
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+ def _set_term_title(title):
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+ """Set terminal title using ctypes to access the Win32 APIs."""
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+ SetConsoleTitleW(title)
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def set_term_title(title):
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