CVE-2017-18078 - log back

CVE-2017-18078 created at 25 Sep 2019 19:31:40
Severity
+ High
Remote
+ Local
Type
+ Access restriction bypass
Description
+ systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
References
+ https://www.exploit-db.com/exploits/43935/
+ https://github.com/systemd/systemd/issues/7736
Notes