Synopsis
Important: policycoreutils security update
Type/Severity
Security Advisory: Important
Topic
An update for policycoreutils is now available for Red Hat Enterprise Linux 7.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The policycoreutils packages contain the core policy utilities required to manage a SELinux environment.
Security Fix(es):
- It was found that the sandbox tool provided in policycoreutils was vulnerable to a TIOCSTI ioctl attack. A specially crafted program executed via the sandbox command could use this flaw to execute arbitrary commands in the context of the parent shell, escaping the sandbox. (CVE-2016-7545)
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
-
Red Hat Enterprise Linux Server - Extended Update Support 7.2 x86_64
-
Red Hat Enterprise Linux Server - AUS 7.2 x86_64
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.2 s390x
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.2 ppc64
-
Red Hat Enterprise Linux EUS Compute Node 7.2 x86_64
-
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.2 ppc64le
-
Red Hat Enterprise Linux Server - TUS 7.2 x86_64
-
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.2 x86_64
Fixes
- BZ - 1378577 - CVE-2016-7545 policycoreutils: SELinux sandbox escape via TIOCSTI ioctl
CVEs
References