USN-3968-1: Sudo vulnerabilities

Releases

• Ubuntu 16.04 ESM

Packages

• sudo - Provide limited super user privileges to specific users

Details

Florian Weimer discovered that Sudo incorrectly handled the noexec
restriction when used with certain applications. A local attacker could
possibly use this issue to bypass configured restrictions and execute
arbitrary commands. (CVE-2016-7076)

It was discovered that Sudo did not properly parse the contents of
/proc/[pid]/stat when attempting to determine its controlling tty. A local
attacker in some configurations could possibly use this to overwrite any
file on the filesystem, bypassing intended permissions. (CVE-2017-1000368)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04

• sudo - 1.8.16-0ubuntu1.6
• sudo-ldap - 1.8.16-0ubuntu1.6

In general, a standard system update will make all the necessary changes.

References

• CVE-2016-7076
• CVE-2017-1000368

Related notices

• USN-3968-3: sudo-ldap, sudo
• USN-3968-2: sudo-ldap, sudo