gsd-2021-20221
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on 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.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2021-20221", "description": "An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on 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.", "id": "GSD-2021-20221", "references": [ "https://www.suse.com/security/cve/CVE-2021-20221.html", "https://access.redhat.com/errata/RHSA-2021:3061", "https://access.redhat.com/errata/RHSA-2021:2521", "https://access.redhat.com/errata/RHSA-2021:1125", "https://ubuntu.com/security/CVE-2021-20221", "https://security.archlinux.org/CVE-2021-20221", "https://linux.oracle.com/cve/CVE-2021-20221.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-20221" ], "details": "An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on 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.", "id": "GSD-2021-20221", "modified": "2023-12-13T01:23:12.031082Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2021-20221", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "qemu", "version": { "version_data": [ { "version_affected": "=", "version_value": "up to, including qemu 4.2.0" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "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 up to and including qemu 4.2.0on 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": { "problemtype_data": [ { "description": [ { "cweId": "CWE-125", "lang": "eng", "value": "CWE-125-\u003eCWE-787" } ] } ] }, "references": { "reference_data": [ { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1924601", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1924601" }, { "name": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html", "refsource": "MISC", "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html" }, { "name": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html", "refsource": "MISC", "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html" }, { "name": "http://www.openwall.com/lists/oss-security/2021/02/05/1", "refsource": "MISC", "url": "http://www.openwall.com/lists/oss-security/2021/02/05/1" }, { "name": "https://security.netapp.com/advisory/ntap-20210708-0005/", "refsource": "MISC", "url": "https://security.netapp.com/advisory/ntap-20210708-0005/" } ] } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:arm64:*", "cpe_name": [], "versionEndIncluding": "4.2.0", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true }, { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "secalert@redhat.com", "ID": "CVE-2021-20221" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on 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": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-125" }, { "lang": "en", "value": "CWE-787" } ] } ] }, "references": { "reference_data": [ { "name": "[debian-lts-announce] 20210218 [SECURITY] [DLA 2560-1] qemu security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html" }, { "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1924601", "refsource": "MISC", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1924601" }, { "name": "[oss-security] 20210205 CVE-2021-20221 QEMU: aarch64: GIC: out-of-bound heap buffer access via an interrupt ID field", "refsource": "MLIST", "tags": [ "Mailing List", "Patch", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2021/02/05/1" }, { "name": "https://security.netapp.com/advisory/ntap-20210708-0005/", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20210708-0005/" }, { "name": "[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "LOW", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H", "version": "3.1" }, "exploitabilityScore": 1.5, "impactScore": 4.0 } }, "lastModifiedDate": "2023-02-12T22:15Z", "publishedDate": "2021-05-13T16:15Z" } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.