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| author | Jeff Forcier <jeff@bitprophet.org> | 2022-02-25 14:50:42 -0500 |
|---|---|---|
| committer | Jeff Forcier <jeff@bitprophet.org> | 2022-03-11 23:18:48 -0500 |
| commit | 4c491e299c9b800358b16fa4886d8d94f45abe2e (patch) | |
| tree | c393f585cde6194489375e4568fae43dd49766c2 /sites | |
| parent | aa3cc6fa3e9f1df72d4ffd2d5fc02ae734a6cba4 (diff) | |
| download | paramiko-4c491e299c9b800358b16fa4886d8d94f45abe2e.tar.gz | |
Fix CVE re: PKey.write_private_key chmod race
CVE-2022-24302 (see changelog for link)
Diffstat (limited to 'sites')
| -rw-r--r-- | sites/www/changelog.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sites/www/changelog.rst b/sites/www/changelog.rst index af648ddc..37d149f2 100644 --- a/sites/www/changelog.rst +++ b/sites/www/changelog.rst @@ -2,6 +2,20 @@ Changelog ========= +- :bug:`-` (`CVE-2022-24302 + <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24302>`_) Creation + of new private key files using `~paramiko.pkey.PKey` subclasses was subject + to a race condition between file creation & mode modification, which could be + exploited by an attacker with knowledge of where the Paramiko-using code + would write out such files. + + This has been patched by using `os.open` and `os.fdopen` to ensure new files + are opened with the correct mode immediately. We've left the subsequent + explicit ``chmod`` in place to minimize any possible disruption, though it + may get removed in future backwards-incompatible updates. + + Thanks to Jan Schejbal for the report & feedback on the solution, and to + Jeremy Katz at Tidelift for coordinating the disclosure. - :release:`2.10.0 <2022-03-11>` - :feature:`1976` Add support for the ``%C`` token when parsing SSH config files. Foundational PR submitted by ``@jbrand42``. |