Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 542
Alerts This Week
Warning Icon 1 542

Red Hat RHSA-2017:0907-01 Moderate: util-linux Process Management Flaw

red hat
Calendar Grey April 12, 2017
Scroller Redhat
Red Hat issued a Significant security patch for util-linux, fixing issues related to process oversight and various defects.
An update for util-linux is now available for Red Hat Enterprise Linux 7

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

Summary

The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk configuration tool and the login program.
Security Fix(es):
* A race condition was found in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions. (CVE-2017-2616)
Red Hat would like to thank Tobias Stöckmann for reporting this issue.
Bug Fix(es):
* The "findmnt --target " command prints all file systems where the mount point directory is . Previously, when used in the chroot environment, "findmnt --target " incorrectly displayed all mount points. The command has been fixed so that it now checks the mount point path and returns information only for the relevant mount point. (BZ#1414481)

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat bug fix util-linux process management

References

https://access.redhat.com/security/cve/CVE-2017-2616 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: util-linux-2.23.2-33.el7_3.2.src.rpm
x86_64: libblkid-2.23.2-33.el7_3.2.i686.rpm libblkid-2.23.2-33.el7_3.2.x86_64.rpm libmount-2.23.2-33.el7_3.2.i686.rpm libmount-2.23.2-33.el7_3.2.x86_64.rpm libuuid-2.23.2-33.el7_3.2.i686.rpm libuuid-2.23.2-33.el7_3.2.x86_64.rpm util-linux-2.23.2-33.el7_3.2.x86_64.rpm util-linux-debuginfo-2.23.2-33.el7_3.2.i686.rpm util-linux-debuginfo-2.23.2-33.el7_3.2.x86_64.rpm uuidd-2.23.2-33.el7_3.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libblkid-devel-2.23.2-33.el7_3.2.i686.rpm libblkid-devel-2.23.2-33.el7_3.2.x86_64.rpm libmount-devel-2.23.2-33.el7_3.2.i686.rpm libmount-devel-2.23.2-33.el7_3.2.x86_64.rpm libuuid-devel-2.23.2-33.el7_3.2.i686.rpm libuuid-devel-2.23.2-33.el7_3.2.x86_64.rpm util-linux-debuginfo-2.23.2-33.el7_3.2.i686.rpm util-linux-debuginfo-2.23.2-33.el7_3.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: util-linux-2.23.2-33.el7_3.2.src.rpm
x86_64: libblkid-2.23.2-33.el7_3.2.i686.rpm libblkid-2.23.2-33.el7_3.2.x86_64.rpm libmount-2.23.2-33.el7_3.2.i686.rpm libmount-2.23.2-33.el7_3.2.x86_64.rpm libuuid-2.23.2-33.el7_3.2.i686.rpm libuuid-2.23.2-33.el7_3.2.x86_64.rpm util-linux-2.23.2-33.el7_3.2.i686.rpm util-linux-2.23.2-33.el7_3.2.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2017:0907-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0907
Issue date: 2017-04-12

Topic

An update for util-linux is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat bug fix util-linux process management

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1414481 - findmnt --target behaviour changed in 7.3, shows all mount-points in chroot

1418710 - CVE-2017-2616 util-linux: Sending SIGKILL to other processes with root privileges via su

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.