RHSA-2021_2322
Vulnerability from csaf_redhat - Published: 2021-06-08 22:38 - Updated: 2024-11-15 07:32Summary
Red Hat Security Advisory: qemu-kvm security update
Severity
Moderate
Notes
Topic: An update for qemu-kvm is now available for Red Hat Enterprise Linux 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: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.
Security Fix(es):
* QEMU: ide: atapi: OOB access while processing read commands (CVE-2020-29443)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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.
An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block address(LBA) is set to an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in a denial of service.
CWE-125 - Out-of-bounds Read
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After 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.
https://access.redhat.com/errata/RHSA-2021:2322
References
Acknowledgments
Tencent Blade Team
Wenxiang Qian
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}
],
"notes": [
{
"category": "description",
"text": "An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block address(LBA) is set to an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "QEMU: ide: atapi: OOB access while processing read commands",
"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": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-29443"
},
{
"category": "external",
"summary": "RHBZ#1917446",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917446"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-29443",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29443"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-29443",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-29443"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2021/01/18/2",
"url": "https://www.openwall.com/lists/oss-security/2021/01/18/2"
}
],
"release_date": "2020-11-18T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-06-08T22:38:48+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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{
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"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.9,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "QEMU: ide: atapi: OOB access while processing read commands"
}
]
}
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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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