Note:
This project will be discontinued after December 13, 2021. [more]
2018-02-13
systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.
Products | Ubuntu_linux, Leap, Systemd |
Type | Improper Link Resolution Before File Access ('Link Following') (CWE-59) |
First patch | - None (likely due to unavailable code) |
Patches | https://github.com/systemd/systemd/issues/7986 |
Links |
• https://usn.ubuntu.com/3816-1/
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E • https://usn.ubuntu.com/3816-2/ • http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html • https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E |