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Red Hat: RHSA-2018-1820-01 Important Heap Overflow Security Advisory

red hat
Calendar Grey June 11, 2018
Scroller Redhat
Essential patch for Red Hat Virtualization tackling significant vulnerabilities and resolving bugs linked to buffer overflow scenarios.
An update for imgbased, redhat-release-virtualization-host, and redhat-virtualization-host is now available for Red Hat Virtualization 4 for RHEL-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/2974891

Summary

The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
Security Fix(es):
* procps-ng, procps: Integer overflows leading to heap overflow in file2strvec (CVE-2018-1124)
* procps-ng, procps: incorrect integer size in proc/alloc.* leading to truncation / integer overflow issues (CVE-2018-1126)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Qualys Research Labs for reporting these issues.
Bug Fix(es):
* Previously some SELinux %post scripts were not re-executed because imgbased attempts to re-execute RPM %post scripts which involve SELinux commands inside a namespace, and some commands failed due to SELinux namespacing rules.
This update ensures that SELinux contexts inside imgbased update namespaces now update appropriately, and the scripts are re-executed by remounting /sys and /sys/fs/selinux inside the update namespace. (BZ#1571607)
* Previously, vmcore files that were created by kdump were not relabelled by kdumpctl after a reboot. As a result, Rsync returned an error when trying to remove the security.selinux attribute while syncing unlabelled files, as this is forbidden by selinux.
In this release, restorecon is run on the source directory before syncing it, which enables the files to be synchronized with the correct labels. (BZ#1579141)
Enhancement(s):
* Previously, imgbased filtered out stderr from LVM commands to improve parsing reliability. In this release, imgbased now logs stderr from LVM commands in order to provide this information in the imgbased logs, for example during an upgrade failure. (BZ#1574187)

Topics%20covered

Topics Covered

security advisory bug fix security fix important heap overflow integer overflow red hat virtualization

References

https://access.redhat.com/security/cve/CVE-2018-1124 https://access.redhat.com/security/cve/CVE-2018-1126 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Virtualization 4 Hypervisor for RHEL 7:
Source: redhat-virtualization-host-4.2-20180531.0.el7_5.src.rpm
noarch: redhat-virtualization-host-image-update-4.2-20180531.0.el7_5.noarch.rpm
RHEL 7-based RHEV-H for RHEV 4 (build requirements):
Source: imgbased-1.0.17-0.1.el7ev.src.rpm redhat-release-virtualization-host-4.2-3.1.el7.src.rpm
noarch: imgbased-1.0.17-0.1.el7ev.noarch.rpm python-imgbased-1.0.17-0.1.el7ev.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.2-3.1.el7.noarch.rpm
x86_64: redhat-release-virtualization-host-4.2-3.1.el7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1820-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1820
Issue date: 2018-06-11

Topic

An update for imgbased, redhat-release-virtualization-host, andredhat-virtualization-host is now available for Red Hat Virtualization 4for RHEL-7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix security fix important heap overflow integer overflow red hat virtualization

Relevant Releases Architectures

RHEL 7-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64

Red Hat Virtualization 4 Hypervisor for RHEL 7 - noarch

Bugs Fixed

1571607 - Failed to open socket to sanlock daemon

1573334 - RHV-H update to latest version fails on RHV 4.1 due to yum transaction failure

1574187 - [RFE] provide LVM stderr in imgbased if an exception is caught

1575465 - CVE-2018-1124 procps-ng, procps: Integer overflows leading to heap overflow in file2strvec

1575853 - CVE-2018-1126 procps-ng, procps: incorrect integer size in proc/alloc.* leading to truncation / integer overflow issues

1575922 - RHVH 4.2 upgrade failed from 4.1 wrapper to wrapper

1579141 - [RHV4.2] unable to upgrade Host 4.1 (rhvh-4.1-0.20180126.0) to RHVH 4.2 (rhvh-4.2.3.0-0.20180508.0)

1582433 - Upgrade imgbased to 1.0.17

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