CVE-2024-4030

On Windows a directory returned by tempfile.mkdtemp() would not always have permissions set to restrict reading and writing to the temporary directory by other users, instead usually inheriting the correct permissions from the default location. Alternate configurations or users without a profile directory may not have the intended permissions.

If you’re not using Windows or haven’t changed the temporary directory location then you aren’t affected by this vulnerability. On other platforms the returned directory is consistently readable and writable only by the current user.

This issue was caused by Python not supporting Unix permissions on Windows. The fix adds support for Unix “700” for the mkdir function on Windows which is used by mkdtemp() to ensure the newly created directory has the proper permissions.

• https://github.com/python/cpython/commit/35c799d79177b962ddace2fa068101465570a29a

  cna@python.org
• https://github.com/python/cpython/commit/5130731c9e779b97d00a24f54cdce73ce9975dfd

  cna@python.org
• https://github.com/python/cpython/commit/66f8bb76a15e64a1bb7688b177ed29e26230fdee

  cna@python.org
• https://github.com/python/cpython/commit/6d0850c4c8188035643586ab4d8ec2468abd699e

  cna@python.org
• https://github.com/python/cpython/commit/81939dad77001556c527485d31a2d0f4a759033e

  cna@python.org
• https://github.com/python/cpython/commit/8ed546679524140d8282175411fd141fe7df070d

  cna@python.org
• https://github.com/python/cpython/commit/91e3669e01245185569d09e9e6e11641282971ee

  cna@python.org
• https://github.com/python/cpython/commit/94591dca510c796c7d40e9b4167ea56f2fdf28ca

  cna@python.org
• https://github.com/python/cpython/commit/c8f868dc52f98011d0f9b459b6487920bfb0ac4d

  cna@python.org
• https://github.com/python/cpython/commit/d86b49411753bf2c83291e3a14ae43fefded2f84

  cna@python.org
• https://github.com/python/cpython/commit/e1dfa978b1ad210d551385ad8073ec6154f53763

  cna@python.org
• https://github.com/python/cpython/commit/eb29e2f5905da93333d1ce78bc98b151e763ff46

  cna@python.org
• https://github.com/python/cpython/issues/118486

  cna@python.org
• https://mail.python.org/archives/list/security-announce@python.org/thread/PRGS5OR3N3PNPT4BMV2VAGN5GMUI5636/

  cna@python.org
• https://security.netapp.com/advisory/ntap-20240705-0005/

  cna@python.org
• https://github.com/python/cpython/commit/35c799d79177b962ddace2fa068101465570a29a

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/5130731c9e779b97d00a24f54cdce73ce9975dfd

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/66f8bb76a15e64a1bb7688b177ed29e26230fdee

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/6d0850c4c8188035643586ab4d8ec2468abd699e

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/81939dad77001556c527485d31a2d0f4a759033e

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/8ed546679524140d8282175411fd141fe7df070d

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/91e3669e01245185569d09e9e6e11641282971ee

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/94591dca510c796c7d40e9b4167ea56f2fdf28ca

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/c8f868dc52f98011d0f9b459b6487920bfb0ac4d

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/d86b49411753bf2c83291e3a14ae43fefded2f84

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/e1dfa978b1ad210d551385ad8073ec6154f53763

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/commit/eb29e2f5905da93333d1ce78bc98b151e763ff46

  af854a3a-2127-422b-91ae-364da2661108
• https://github.com/python/cpython/issues/118486

  af854a3a-2127-422b-91ae-364da2661108
• https://mail.python.org/archives/list/security-announce@python.org/thread/PRGS5OR3N3PNPT4BMV2VAGN5GMUI5636/

  af854a3a-2127-422b-91ae-364da2661108
• https://security.netapp.com/advisory/ntap-20240705-0005/

  af854a3a-2127-422b-91ae-364da2661108