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{
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"data_version" : "4.0" ,
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"data_type" : "CVE" ,
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"CVE_data_meta" : {
"ID" : "CVE-2021-20221" ,
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"ASSIGNER" : "secalert@redhat.com" ,
"STATE" : "PUBLIC"
} ,
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"description" : {
"description_data" : [
{
"lang" : "eng" ,
"value" : "An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario."
}
]
} ,
"problemtype" : {
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{
"description" : [
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"lang" : "eng" ,
"value" : "Out-of-bounds Write" ,
"cweId" : "CWE-787"
}
]
}
]
} ,
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"affects" : {
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{
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"vendor_name" : "Red Hat" ,
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"product" : {
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{
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"product_name" : "Advanced Virtualization for RHEL 8.2.1" ,
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"version" : {
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{
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"version_value" : "8030120210325145214.8f6a38fe" ,
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{
"product_name" : "Red Hat Enterprise Linux 8" ,
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"version_value" : "8040020210721215855.522a0ee4" ,
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{
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"url" : "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html" ,
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"name" : "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html"
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} ,
{
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"url" : "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html" ,
"refsource" : "MISC" ,
"name" : "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
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} ,
{
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"url" : "http://www.openwall.com/lists/oss-security/2021/02/05/1" ,
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"refsource" : "MISC" ,
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"name" : "http://www.openwall.com/lists/oss-security/2021/02/05/1"
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} ,
{
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"url" : "https://access.redhat.com/errata/RHSA-2021:1125" ,
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"name" : "https://access.redhat.com/errata/RHSA-2021:1125"
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} ,
{
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"url" : "https://access.redhat.com/errata/RHSA-2021:2521" ,
"refsource" : "MISC" ,
"name" : "https://access.redhat.com/errata/RHSA-2021:2521"
} ,
{
"url" : "https://access.redhat.com/errata/RHSA-2021:3061" ,
"refsource" : "MISC" ,
"name" : "https://access.redhat.com/errata/RHSA-2021:3061"
} ,
{
"url" : "https://access.redhat.com/security/cve/CVE-2021-20221" ,
"refsource" : "MISC" ,
"name" : "https://access.redhat.com/security/cve/CVE-2021-20221"
} ,
{
"url" : "https://bugs.launchpad.net/qemu/+bug/1914353" ,
"refsource" : "MISC" ,
"name" : "https://bugs.launchpad.net/qemu/+bug/1914353"
} ,
{
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1924601" ,
"refsource" : "MISC" ,
"name" : "https://bugzilla.redhat.com/show_bug.cgi?id=1924601"
} ,
{
"url" : "https://security.netapp.com/advisory/ntap-20210708-0005/" ,
"refsource" : "MISC" ,
"name" : "https://security.netapp.com/advisory/ntap-20210708-0005/"
} ,
{
"url" : "https://www.openwall.com/lists/oss-security/2021/02/05/1" ,
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"name" : "https://www.openwall.com/lists/oss-security/2021/02/05/1"
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}
]
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} ,
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"impact" : {
"cvss" : [
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{
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"attackComplexity" : "HIGH" ,
"attackVector" : "LOCAL" ,
"availabilityImpact" : "LOW" ,
"baseScore" : 2.5 ,
"baseSeverity" : "LOW" ,
"confidentialityImpact" : "NONE" ,
"integrityImpact" : "NONE" ,
"privilegesRequired" : "HIGH" ,
"scope" : "CHANGED" ,
"userInteraction" : "NONE" ,
"vectorString" : "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:L" ,
"version" : "3.1"
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}
]
}
}
