RHSA-2017:1206
Vulnerability from csaf_redhat - Published: 2017-05-09 12:29 - Updated: 2026-06-30 11:41Summary
Red Hat Security Advisory: qemu-kvm security update
Severity
Important
Notes
Topic: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.
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: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM.
Security Fix(es):
* A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process. (CVE-2016-9603)
* An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process. (CVE-2017-7980)
* An out-of-bounds memory access issue was found in QEMU's VNC display driver support. The vulnerability could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user/process inside a guest could use this flaw to crash the QEMU process, resulting in a denial of service. (CVE-2017-2633)
* An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service. (CVE-2017-7718)
Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) and Li Qiang (Qihoo 360 Gear Team) for reporting CVE-2017-7980 and Jiangxin (PSIRT Huawei Inc.) for reporting CVE-2017-7718.
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.
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
5.5 (Medium)
Affected products
Fixed
32 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 6Client-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-img-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Client-6.9.z:qemu-kvm-tools-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-img-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6ComputeNode-6.9.z:qemu-kvm-tools-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.ppc64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-img-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.ppc64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Server-6.9.z:qemu-kvm-tools-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-guest-agent-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-img-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-kvm-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.i686 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-kvm-debuginfo-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 6Workstation-6.9.z:qemu-kvm-tools-2:0.12.1.2-2.503.el6_9.3.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
An out-of-bounds memory access issue was found in Quick Emulator (QEMU) in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.
5.4 (Medium)
Affected products
Fixed
32 products, the same list as for
CVE-2016-9603
Threats
Impact
Moderate
An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service.
4.0 (Medium)
Affected products
Fixed
32 products, the same list as for
CVE-2016-9603
Threats
Impact
Moderate
An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
5.5 (Medium)
Affected products
Fixed
32 products, the same list as for
CVE-2016-9603
Threats
Impact
Important
References
25 references
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"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.",
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2017-7980"
},
{
"category": "external",
"summary": "RHBZ#1444371",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1444371"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-7980",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-7980"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-7980",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7980"
}
],
"release_date": "2017-03-15T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2017-05-09T12:29:49+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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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "Qemu: display: cirrus: OOB r/w access issues in bitblt routines"
}
]
}
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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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