CVE-2018-6954

Description

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.

References

https://usn.ubuntu.com/3816-2/

https://usn.ubuntu.com/3816-1/

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

https://github.com/systemd/systemd/issues/7986

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3