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Vulnerability Details :

CVE-2020-27821

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-08 Dec, 2020 | 21:33
Updated At-04 Aug, 2024 | 16:25
Rejected At-
Credits

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:08 Dec, 2020 | 21:33
Updated At:04 Aug, 2024 | 16:25
Rejected At:
▼CVE Numbering Authority (CNA)

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

Affected Products
Vendor
n/a
Product
QEMU
Versions
Affected
  • prior to 5.2.0
Problem Types
TypeCWE IDDescription
CWECWE-787CWE-787->CWE-122
Type: CWE
CWE ID: CWE-787
Description: CWE-787->CWE-122
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.redhat.com/show_bug.cgi?id=1902651
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/12/16/6
mailing-list
x_refsource_MLIST
https://security.netapp.com/advisory/ntap-20210115-0006/
x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
mailing-list
x_refsource_MLIST
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=1902651
Resource:
x_refsource_MISC
Hyperlink: http://www.openwall.com/lists/oss-security/2020/12/16/6
Resource:
mailing-list
x_refsource_MLIST
Hyperlink: https://security.netapp.com/advisory/ntap-20210115-0006/
Resource:
x_refsource_CONFIRM
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Resource:
mailing-list
x_refsource_MLIST
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugzilla.redhat.com/show_bug.cgi?id=1902651
x_refsource_MISC
x_transferred
http://www.openwall.com/lists/oss-security/2020/12/16/6
mailing-list
x_refsource_MLIST
x_transferred
https://security.netapp.com/advisory/ntap-20210115-0006/
x_refsource_CONFIRM
x_transferred
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=1902651
Resource:
x_refsource_MISC
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2020/12/16/6
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://security.netapp.com/advisory/ntap-20210115-0006/
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:08 Dec, 2020 | 22:15
Updated At:07 Nov, 2023 | 03:21

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.0MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Primary2.02.1LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
Type: Primary
Version: 3.1
Base score: 6.0
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Type: Primary
Version: 2.0
Base score: 2.1
Base severity: LOW
Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:P
CPE Matches

QEMU
qemu
>>qemu>>Versions before 5.2.0(exclusive)
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-787Primarynvd@nist.gov
CWE-787Secondarysecalert@redhat.com
CWE ID: CWE-787
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-787
Type: Secondary
Source: secalert@redhat.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
http://www.openwall.com/lists/oss-security/2020/12/16/6secalert@redhat.com
Mailing List
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1902651secalert@redhat.com
Issue Tracking
Patch
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlsecalert@redhat.com
Mailing List
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210115-0006/secalert@redhat.com
Third Party Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2020/12/16/6
Source: secalert@redhat.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=1902651
Source: secalert@redhat.com
Resource:
Issue Tracking
Patch
Third Party Advisory
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Source: secalert@redhat.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://security.netapp.com/advisory/ntap-20210115-0006/
Source: secalert@redhat.com
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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