Vulnerability-Lookup

RHSA-2017:2628

Vulnerability from csaf_redhat - Published: 2017-09-05 11:52 - Updated: 2026-06-30 11:35

Summary

Red Hat Security Advisory: qemu-kvm-rhev security and bug fix update

Severity

Moderate

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 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.

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): * An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection negotiation, where the I/O co-routine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service. (CVE-2017-7539)

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.

CVE-2017-7539

An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-617 - Reachable Assertion

Affected products

Fixed 22 products

Product	Version	Remediation
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.src	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-img-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-img-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-common-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-common-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.src	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-debuginfo-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-rhev-debuginfo-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-tools-rhev-10:2.9.0-16.el7_4.5.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-RHEV-Agents-7:qemu-kvm-tools-rhev-10:2.9.0-16.el7_4.5.x86_64	—	Vendor Fix fix

Threats

Impact Moderate

References

11 references

URL	Category
https://access.redhat.com/errata/RHSA-2017:2628	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1473622	external
https://bugzilla.redhat.com/show_bug.cgi?id=1482515	external
https://bugzilla.redhat.com/show_bug.cgi?id=1482851	external
https://bugzilla.redhat.com/show_bug.cgi?id=1482856	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2017-7539	self
https://bugzilla.redhat.com/show_bug.cgi?id=1473622	external
https://www.cve.org/CVERecord?id=CVE-2017-7539	external
https://nvd.nist.gov/vuln/detail/CVE-2017-7539	external

JSON

To clipboard

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          "title": "Vulnerability description"
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          "title": "Vulnerability summary"
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      "title": "Qemu: qemu-nbd crashes due to undefined I/O coroutine"
    }
  ]
}

CVE-2017-7539 (GCVE-0-2017-7539)

Vulnerability from cvelistv5 – Published: 2018-07-26 14:00 – Updated: 2024-08-05 16:04

Summary

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-617

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1088 records in the last 180 days details

References

12 references

URL	Tags
https://access.redhat.com/errata/RHSA-2017:2628	vendor-advisoryx_refsource_REDHAT
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2017:3473	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:3470	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:3472	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:3474	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:3471	vendor-advisoryx_refsource_REDHAT
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2017/07/21/4	mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2017:3466	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/99944	vdb-entryx_refsource_BID

Impacted products

1 product

Vendor	Product	Version
QEMU	Qemu	Affected: 2.10.1

Date Public

2017-06-02 00:00

Show details on NVD website

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.

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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