CVE-2018-6557

Priority
Description
The MOTD update script in the base-files package in Ubuntu 18.04 LTS before
10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled
temporary files. A local attacker could use this issue to cause a denial of
service, or possibly escalate privileges if kernel symlink restrictions
were disabled.
Assigned-to
mdeslaur
Notes
mdeslaurlow priority because of default symlink restrictions
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):not-affected (code not present)
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (code not present)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (code not present)
Ubuntu 18.04 LTS (Bionic Beaver):released (10.1ubuntu2.2)
This vulnerability is mitigated in part by the use of symlink restrictions in Ubuntu. For more details see https://wiki.ubuntu.com/Security/Features#symlink
More Information

Updated: 2020-07-28 20:05:31 UTC (commit d26b6ca9f5b3adb89bb036ce73ae7dab894935ec)