RHBA-2018:0135
Vulnerability from csaf_redhat - Published: 2018-01-24 00:00 - Updated: 2025-11-21 17:21Summary
Red Hat Bug Fix Advisory: org.ovirt.engine-root bug fix and enhancement update
Severity
Low
Notes
Topic: An update for org.ovirt.engine-root is now available for Red Hat Virtualization Manager version 4.1.
Details: The Red Hat Enterprise Virtualization Manager is a centralized management platform that allows system administrators to view and manage virtual machines. The Manager provides a comprehensive range of features including search capabilities, resource management, live migrations, and virtual infrastructure provisioning.
The Manager is a JBoss Application Server application that provides several interfaces through which the virtual environment can be accessed and interacted with, including an Administration Portal, a User Portal, and a Representational State Transfer (REST) Application Programming Interface (API).
Changes to the ovirt-engine component:
* When live or cold merge fails, snapshot disks may be left in an illegal state. If virtual machines with illegal snapshot disks are shut down, they will not re-start. Virtual machines with illegal snapshot disks are now marked with an exclamation mark and a warning message not to shut them down. (BZ#1533061)
* The kernel no longer supports the /sys/block/dm-X/queue/discard_zeroes_data file in sysfs. It is therefore no longer possible to determine whether discarded blocks from a block device returns zeros or the actual data. Therefore, the virtual machine disk properties "Wipe After Delete" and "Enable Discard" are no longer supported at the same time. (BZ#1529305)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
It was discovered that the combination of Enable Discard and Wipe After Delete flags for VM disks managed by oVirt, could cause a disk to be incompletely zeroed when removed from a VM. If the same storage blocks happen to be later allocated to a new disk attached to another VM, potentially sensitive data could be revealed to privileged users of that VM.
4.2 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/errata/RHBA-2018:0135
References
Acknowledgments
Red Hat
Idan Shaby
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{
"acknowledgments": [
{
"names": [
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"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
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"cwe": {
"id": "CWE-212",
"name": "Improper Removal of Sensitive Information Before Storage or Transfer"
},
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1549944"
}
],
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{
"category": "description",
"text": "It was discovered that the combination of Enable Discard and Wipe After Delete flags for VM disks managed by oVirt, could cause a disk to be incompletely zeroed when removed from a VM. If the same storage blocks happen to be later allocated to a new disk attached to another VM, potentially sensitive data could be revealed to privileged users of that VM.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "ovirt-engine: When Wipe After Delete (WAD) and Enable Discard are both enabled for a VM disk, discarded data might not be wiped after the disk is removed.",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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{
"category": "external",
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"url": "https://gerrit.ovirt.org/#/c/84861"
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{
"category": "external",
"summary": "https://gerrit.ovirt.org/#/c/84875",
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"release_date": "2018-03-06T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2018-01-24T00:00:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:",
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"integrityImpact": "NONE",
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"threats": [
{
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}
],
"title": "ovirt-engine: When Wipe After Delete (WAD) and Enable Discard are both enabled for a VM disk, discarded data might not be wiped after the disk is removed."
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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