CVE-2021-3527
Vulnerability from cvelistv5
Published
2021-05-26 21:13
Modified
2024-08-03 17:01
Severity ?
EPSS score ?
Summary
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
References
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Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.", }, ], problemTypes: [ { descriptions: [ { cweId: "CWE-770", description: "CWE-770", lang: "en", type: "CWE", }, ], }, ], providerMetadata: { dateUpdated: "2022-09-05T05:06:17", orgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", shortName: "redhat", }, references: [ { tags: [ "x_refsource_MISC", ], url: "https://bugzilla.redhat.com/show_bug.cgi?id=1955695", }, { tags: [ "x_refsource_MISC", ], url: "https://www.openwall.com/lists/oss-security/2021/05/05/5", }, { tags: [ "x_refsource_MISC", ], url: "https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986", }, { tags: [ "x_refsource_MISC", ], url: "https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c", }, { tags: [ "x_refsource_CONFIRM", ], url: "https://security.netapp.com/advisory/ntap-20210708-0008/", }, { name: "[debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html", }, { name: "GLSA-202208-27", tags: [ "vendor-advisory", "x_refsource_GENTOO", ], url: "https://security.gentoo.org/glsa/202208-27", }, { name: "[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update", tags: [ "mailing-list", "x_refsource_MLIST", ], url: "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html", }, ], }, }, cveMetadata: { assignerOrgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", assignerShortName: "redhat", cveId: "CVE-2021-3527", datePublished: "2021-05-26T21:13:56", dateReserved: "2021-04-30T00:00:00", dateUpdated: "2024-08-03T17:01:07.589Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2021-3527\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2021-05-26T22:15:08.267\",\"lastModified\":\"2024-11-21T06:21:45.953\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw was found in the USB redirector device (usb-redir) of QEMU. 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Sightings
Author | Source | Type | Date |
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Nomenclature
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