rhsa-2018_1104
Vulnerability from csaf_redhat
Published
2018-04-10 18:54
Modified
2024-11-15 02:07
Summary
Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update
Notes
Topic
An update for qemu-kvm-rhev 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 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.
The following packages have been upgraded to a later upstream version: qemu-kvm-rhev (2.10.0). (BZ#1470749)
Security Fix(es):
* Qemu: stack buffer overflow in NBD server triggered via long export name (CVE-2017-15118)
* Qemu: DoS via large option request (CVE-2017-15119)
* Qemu: vga: OOB read access during display update (CVE-2017-13672)
* Qemu: vga: reachable assert failure during display update (CVE-2017-13673)
* Qemu: Slirp: use-after-free when sending response (CVE-2017-13711)
* Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124)
* Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268)
* Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683)
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 David Buchanan for reporting CVE-2017-13672 and CVE-2017-13673; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15118 and CVE-2017-15119 issues were discovered by Eric Blake (Red Hat) and the CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat).
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.
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{
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},
{
"category": "general",
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{
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{
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"text": "The Network Block Device (NBD) server in Quick Emulator (QEMU), is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.",
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},
{
"category": "summary",
"text": "qemu: DoS via large option request",
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{
"category": "general",
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{
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Qemu: memory exhaustion through framebuffer update request message in VNC server",
"title": "Vulnerability summary"
},
{
"category": "general",
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{
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{
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1530356"
}
],
"notes": [
{
"category": "description",
"text": "An out-of-bounds read access issue was found in the VGA emulator of QEMU. It could occur in vga_draw_text routine, while updating display area for a vnc client. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Qemu: Out-of-bounds read in vga_draw_text routine",
"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"
}
],
"product_status": {
"fixed": [
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"7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7.x86_64",
"7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7.ppc64le",
"7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7.x86_64",
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"7Server-RHEV-4-Agents-7:qemu-kvm-rhev-10:2.10.0-21.el7.x86_64",
"7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7.ppc64le",
"7Server-RHEV-4-Agents-7:qemu-kvm-rhev-debuginfo-10:2.10.0-21.el7.x86_64",
"7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7.ppc64le",
"7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2018-5683"
},
{
"category": "external",
"summary": "RHBZ#1530356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1530356"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2018-5683",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-5683"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-5683",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5683"
}
],
"release_date": "2017-12-25T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2018-04-10T18:54:38+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.",
"product_ids": [
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"7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7.x86_64",
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"7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7.x86_64",
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"7Server-RHEV-4-Agents-7:qemu-kvm-tools-rhev-10:2.10.0-21.el7.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2018:1104"
}
],
"scores": [
{
"cvss_v2": {
"accessComplexity": "MEDIUM",
"accessVector": "ADJACENT_NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 2.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:A/AC:M/Au:S/C:N/I:N/A:P",
"version": "2.0"
},
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "LOW",
"baseScore": 3.0,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L",
"version": "3.0"
},
"products": [
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"7Server-RHEV-4-Agents-7:qemu-img-rhev-10:2.10.0-21.el7.x86_64",
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"7Server-RHEV-4-Agents-7:qemu-kvm-common-rhev-10:2.10.0-21.el7.x86_64",
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]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "Qemu: Out-of-bounds read in vga_draw_text routine"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.