GSD-2020-25723
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-25723",
"description": "A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.",
"id": "GSD-2020-25723",
"references": [
"https://www.suse.com/security/cve/CVE-2020-25723.html",
"https://access.redhat.com/errata/RHSA-2021:1762",
"https://access.redhat.com/errata/RHSA-2021:0771",
"https://access.redhat.com/errata/RHSA-2021:0648",
"https://access.redhat.com/errata/RHBA-2021:0639",
"https://ubuntu.com/security/CVE-2020-25723",
"https://security.archlinux.org/CVE-2020-25723",
"https://linux.oracle.com/cve/CVE-2020-25723.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-25723"
],
"details": "A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.",
"id": "GSD-2020-25723",
"modified": "2023-12-13T01:21:57.385033Z",
"schema_version": "1.4.0"
}
},
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"affects": {
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{
"product": {
"product_data": [
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"product_name": "QEMU",
"version": {
"version_data": [
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"version_value": "qemu 5.2.0"
}
]
}
}
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"vendor_name": "n/a"
}
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"value": "A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service."
}
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"refsource": "MISC",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1898579"
},
{
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"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20201218-0004/"
},
{
"name": "[oss-security] 20201222 CVE-2020-25723 QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/12/22/1"
},
{
"name": "[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
}
]
}
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"nvd.nist.gov": {
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"nodes": [
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"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "5.1.1",
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}
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{
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},
"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": "LOW",
"baseScore": 3.2,
"baseSeverity": "LOW",
"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:L",
"version": "3.1"
},
"exploitabilityScore": 1.5,
"impactScore": 1.4
}
},
"lastModifiedDate": "2022-09-30T19:19Z",
"publishedDate": "2020-12-02T01:15Z"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- 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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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