RHSA-2017:1682
Vulnerability from csaf_redhat - Published: 2017-07-05 08:15 - Updated: 2026-06-28 12:11Summary
Red Hat Security Advisory: qemu-kvm-rhev security and bug fix update
Severity
Important
Notes
Topic: An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor and Agents for RHEL-7 and RHEV 4.X RHEV-H and Agents for RHEL-7.
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.
Details: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.
Security Fix(es):
* Quick Emulator (QEMU) built with Network Block Device (NBD) Server support was vulnerable to a null-pointer dereference issue. The flaw could occur when releasing a client, which was not initialized due to failed negotiation. A remote user or process could exploit this flaw to crash the qemu-nbd server (denial of service). (CVE-2017-9524)
Bug Fix(es):
* Previously, when the data plane was in use, changing the target image of a virtual SCSI CD device caused the guest to terminate unexpectedly with a core dump. With this update, the virtio-scsi bus rejects SCSI CDs when the data plane is active, which prevents the crash from occurring. Note that this is a temporary solution, and a full fix to make the data plane and SCSI CD compatible will be provided in the future. (BZ#1461837)
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.
Quick Emulator (QEMU) built with Network Block Device (NBD) Server support was vulnerable to a null-pointer dereference issue. The flaw could occur when releasing a client that was not initialized due to failed negotiation. A remote user or process could exploit this flaw to crash the qemu-nbd server (denial of service).
5.3 (Medium)
Affected products
Fixed
22 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-img-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-img-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-debuginfo-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.12.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-tools-rhev-10:2.6.0-28.el7_3.12.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
References
9 references
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"vulnerabilities": [
{
"cve": "CVE-2017-9524",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2017-05-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1460170"
}
],
"notes": [
{
"category": "description",
"text": "Quick Emulator (QEMU) built with Network Block Device (NBD) Server support was vulnerable to a null-pointer dereference issue. The flaw could occur when releasing a client that was not initialized due to failed negotiation. A remote user or process could exploit this flaw to crash the qemu-nbd server (denial of service).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Qemu: nbd: segmentation fault due to client non-negotiation",
"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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"date": "2017-07-05T08:15:37+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.",
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{
"category": "impact",
"details": "Moderate"
}
],
"title": "Qemu: nbd: segmentation fault due to client non-negotiation"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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