fkie_cve-2017-8284
Vulnerability from fkie_nvd
Published
2017-04-26 14:59
Modified
2025-04-20 01:37
Severity ?
Summary
The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated "this bug does not violate any security guarantees QEMU makes.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://bugs.chromium.org/p/project-zero/issues/detail?id=1122 | Issue Tracking, Third Party Advisory | |
| cve@mitre.org | https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 | Issue Tracking, Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugs.chromium.org/p/project-zero/issues/detail?id=1122 | Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 | Issue Tracking, Patch, Third Party Advisory |
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"configurations": [
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"nodes": [
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"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A965C2D1-C447-4324-95A4-27285ECF8909",
"versionEndIncluding": "2.8.1.1",
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"lang": "en",
"value": "The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated \"this bug does not violate any security guarantees QEMU makes."
},
{
"lang": "es",
"value": "** EN DISPUTA ** La funci\u00f3n disas_insn en target / i386 / translate.c en QEMU para las versiones anteriores a la 2.9.0, cuando se utiliza el modo TCG sin aceleraci\u00f3n de hardware, no limita el tama\u00f1o de instrucci\u00f3n, lo que permite a los usuarios locales obtener privilegios creando un bloque b\u00e1sico modificado que inyecta c\u00f3digo en un programa setuid, como lo demuestra procmail. NOTA: el proveedor ha declarado que \"este error no viola las garant\u00edas de seguridad de QEMU.\""
}
],
"id": "CVE-2017-8284",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
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"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 10.0,
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
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"source": "nvd@nist.gov",
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"published": "2017-04-26T14:59:00.270",
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"vulnStatus": "Deferred",
"weaknesses": [
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"lang": "en",
"value": "CWE-94"
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],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- 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.
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