Vulnerability-Lookup

CNVD-2017-07130

Vulnerability from cnvd - Published: 2017-05-22

Title

QEMU代码注入漏洞

Description

QEMU（又名Quick Emulator）是法国程序员法布里斯-贝拉（Fabrice Bellard）所研发的一套模拟处理器软件。 QEMU 2.9.0之前版本存在代码注入漏洞。由于target/i386/translate.c中的disas_insn功能不限制指令大小，攻击者可利用该漏洞通过创建修改的由procmail显示的将代码注入setuid程序的基本块。

Severity

中

Patch Name

QEMU代码注入漏洞的补丁

Patch Description

Formal description

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://bugs.chromium.org/p/project-zero/issues/detail?id=1122

Reference

https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14 https://nvd.nist.gov/vuln/detail/CVE-2017-8284

Impacted products

Name
Qemu QEMU <2.9.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-8284",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8284"
    }
  },
  "description": "QEMU\uff08\u53c8\u540dQuick Emulator\uff09\u662f\u6cd5\u56fd\u7a0b\u5e8f\u5458\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u6240\u7814\u53d1\u7684\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\r\n\r\nQEMU 2.9.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\u3002\u7531\u4e8etarget/i386/translate.c\u4e2d\u7684disas_insn\u529f\u80fd\u4e0d\u9650\u5236\u6307\u4ee4\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u521b\u5efa\u4fee\u6539\u7684\u7531procmail\u663e\u793a\u7684\u5c06\u4ee3\u7801\u6ce8\u5165setuid\u7a0b\u5e8f\u7684\u57fa\u672c\u5757\u3002",
  "discovererName": "jannh@google.com",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttps://bugs.chromium.org/p/project-zero/issues/detail?id=1122",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-07130",
  "openTime": "2017-05-22",
  "patchDescription": "QEMU\uff08\u53c8\u540dQuick Emulator\uff09\u662f\u6cd5\u56fd\u7a0b\u5e8f\u5458\u6cd5\u5e03\u91cc\u65af-\u8d1d\u62c9\uff08Fabrice Bellard\uff09\u6240\u7814\u53d1\u7684\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\r\n\r\nQEMU 2.9.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\u3002\u7531\u4e8etarget/i386/translate.c\u4e2d\u7684disas_insn\u529f\u80fd\u4e0d\u9650\u5236\u6307\u4ee4\u5927\u5c0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u521b\u5efa\u4fee\u6539\u7684\u7531procmail\u663e\u793a\u7684\u5c06\u4ee3\u7801\u6ce8\u5165setuid\u7a0b\u5e8f\u7684\u57fa\u672c\u5757\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "QEMU\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU \u003c2.9.0"
  },
  "referenceLink": "https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-8284",
  "serverity": "\u4e2d",
  "submitTime": "2017-04-28",
  "title": "QEMU\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2017-8284 (GCVE-0-2017-8284)

Vulnerability from cvelistv5 – Published: 2017-04-26 14:00 – Updated: 2024-09-16 18:03 Disputed

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://bugs.chromium.org/p/project-zero/issues/d…	x_refsource_MISC
https://github.com/qemu/qemu/commit/30663fd26c030…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T16:34:22.606Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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              "x_transferred"
            ],
            "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1122"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14"
          }
        ],
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      ],
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          "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."
        }
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      "references": [
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1122"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14"
        }
      ],
      "tags": [
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      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2017-8284",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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        "description": {
          "description_data": [
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            {
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    "dateReserved": "2017-04-26T00:00:00.000Z",
    "dateUpdated": "2024-09-16T18:03:56.866Z",
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  },
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}

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

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.
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Action not permitted

CNVD-2017-07130

CVE-2017-8284 (GCVE-0-2017-8284)

Tags

Sightings

Nomenclature

Related by attack behaviour