RHSA-2018:3470 - Security Advisory

Topic

An update for imgbased, redhat-release-virtualization-host, and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 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):

• spice: Missing check in demarshal.py:write_validate_array_item() allows for buffer overflow and denial of service (CVE-2018-10873)
• glusterfs: Multiple flaws (CVE-2018-10904, CVE-2018-10907, CVE-2018-10923, CVE-2018-10926, CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, CVE-2018-10911, CVE-2018-10914, CVE-2018-14652, CVE-2018-14653, CVE-2018-14654, CVE-2018-14659, CVE-2018-14660, CVE-2018-14661, CVE-2018-10913)
• samba: Insufficient input validation in libsmbclient (CVE-2018-10858)

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 Michael Hanselmann (hansmi.ch) for reporting CVE-2018-10904, CVE-2018-10907, CVE-2018-10923, CVE-2018-10926, CVE-2018-10927, CVE-2018-10928, CVE-2018-10929, CVE-2018-10930, CVE-2018-10911, CVE-2018-10914, CVE-2018-14652, CVE-2018-14653, CVE-2018-14654, CVE-2018-14659, CVE-2018-14660, CVE-2018-14661, and CVE-2018-10913. The CVE-2018-10873 issue was discovered by Frediano Ziglio (Red Hat).

Bug Fix(es):

• When upgrading Red Hat Virtualization Host (RHVH), imgbased fails to run garbage collection on previous layers, so new logical volumes are removed, and the boot entry points to a logical volume that was removed.

If the RHVH upgrade finishes successfully, the hypervisor boots successfully, even if garbage collection fails. (BZ#1632058)

• During the upgrade process, when lvremove runs garbage collection, it prompts for user confirmation, causing the upgrade process to fail. Now the process uses "lvremove --force" when trying to remove logical volumes and does not fail even if garbage collection fails, and as a result, the upgrade process finishes successfully. (BZ#1632585)

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

Affected Products

• Red Hat Virtualization 4 for RHEL 7 x86_64
• Red Hat Virtualization Host 4 for RHEL 7 x86_64

Fixes

• BZ - 1501276 - RHVH 4.2 should include RHGS 3.4 Batch #1 packages
• BZ - 1593731 - [downstream clone - 4.2.7] Rpm verify fails for newly installed libvirt-daemon-config-nwfilter package .
• BZ - 1596008 - CVE-2018-10873 spice: Missing check in demarshal.py:write_validate_array_item() allows for buffer overflow and denial of service
• BZ - 1601298 - CVE-2018-10904 glusterfs: Unsanitized file names in debug/io-stats translator can allow remote attackers to execute arbitrary code
• BZ - 1601642 - CVE-2018-10907 glusterfs: Stack-based buffer overflow in server-rpc-fops.c allows remote attackers to execute arbitrary code
• BZ - 1601657 - CVE-2018-10911 glusterfs: Improper deserialization in dict.c:dict_unserialize() can allow attackers to read arbitrary memory
• BZ - 1607617 - CVE-2018-10914 glusterfs: remote denial of service of gluster volumes via posix_get_file_contents function in posix-helpers.c
• BZ - 1607618 - CVE-2018-10913 glusterfs: Information Exposure in posix_get_file_contents function in posix-helpers.c
• BZ - 1610659 - CVE-2018-10923 glusterfs: I/O to arbitrary devices on storage server
• BZ - 1612658 - CVE-2018-10927 glusterfs: File status information leak and denial of service
• BZ - 1612659 - CVE-2018-10928 glusterfs: Improper resolution of symlinks allows for privilege escalation
• BZ - 1612660 - CVE-2018-10929 glusterfs: Arbitrary file creation on storage server allows for execution of arbitrary code
• BZ - 1612664 - CVE-2018-10930 glusterfs: Files can be renamed outside volume
• BZ - 1612805 - CVE-2018-10858 samba: Insufficient input validation in libsmbclient
• BZ - 1613143 - CVE-2018-10926 glusterfs: Device files can be created in arbitrary locations
• BZ - 1613231 - goferd errors in /var/log/messages of Red Hat Virtualization Host
• BZ - 1614971 - Upgrading RHV-H from 4.0.X to 4.2 is failing during migrate_var
• BZ - 1619590 - Rebase RHV-H on RHEL 7.6
• BZ - 1624453 - Host "hostname" moved to Non-Operational state as host does not meet the cluster's minimum CPU level. Missing CPU features : ssbd, spec_ctrl
• BZ - 1626960 - [el7.6]Network parameters IPv4/route/ovirtmgmt are missing during deploying Hosted-Engine
• BZ - 1631576 - CVE-2018-14654 glusterfs: "features/index" translator can create arbitrary, empty files
• BZ - 1632585 - lvremove command will fail if it asks for confirmation while removing old RHV-H layers
• BZ - 1632974 - CVE-2018-14652 glusterfs: Buffer overflow in "features/locks" translator allows for denial of service
• BZ - 1633431 - CVE-2018-14653 glusterfs: Heap-based buffer overflow via "gf_getspec_req" RPC message
• BZ - 1635926 - CVE-2018-14660 glusterfs: Repeat use of "GF_META_LOCK_KEY" xattr allows for memory exhaustion
• BZ - 1635929 - CVE-2018-14659 glusterfs: Unlimited file creation via "GF_XATTR_IOSTATS_DUMP_KEY" xattr allows for denial of service
• BZ - 1636880 - CVE-2018-14661 glusterfs: features/locks translator passes an user-controlled string to snprintf without a proper format string resulting in a denial of service

CVEs

• CVE-2018-10858
• CVE-2018-10873
• CVE-2018-10904
• CVE-2018-10907
• CVE-2018-10911
• CVE-2018-10913
• CVE-2018-10914
• CVE-2018-10923
• CVE-2018-10926
• CVE-2018-10927
• CVE-2018-10928
• CVE-2018-10929
• CVE-2018-10930
• CVE-2018-14652
• CVE-2018-14653
• CVE-2018-14654
• CVE-2018-14659
• CVE-2018-14660
• CVE-2018-14661
• CVE-2018-1000805

References

• https://access.redhat.com/security/updates/classification/#moderate