cnvd - cnvd-2021-00892

cnvd-2021-00892

Vulnerability from cnvd

Title: QEMU堆缓冲区溢出漏洞（CNVD-2021-00892）

Description:

QEMU是一套由法布里斯·贝拉(Fabrice Bellard)所编写的、以GPL许可证分发源码的模拟处理器，在GNU/Linux平台上使用广泛。

QEMU 4.1.0中的block/iscsi.c中的iscsi_aio_ioctl_cb存在堆缓冲区溢出漏洞。攻击者可利用该漏洞获取进程内存中的信息。

Severity: 低

Patch Name: QEMU堆缓冲区溢出漏洞（CNVD-2021-00892）的补丁

Patch Description:

QEMU是一套由法布里斯·贝拉(Fabrice Bellard)所编写的、以GPL许可证分发源码的模拟处理器，在GNU/Linux平台上使用广泛。

QEMU 4.1.0中的block/iscsi.c中的iscsi_aio_ioctl_cb存在堆缓冲区溢出漏洞。攻击者可利用该漏洞获取进程内存中的信息。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://git.qemu.org/?p=qemu.git;a=commit;h=ff0507c239a246fd7215b31c5658fc6a3ee1e4c5

Reference: https://vigilance.fr/vulnerability/QEMU-out-of-bounds-memory-reading-via-iscsi-aio-ioctl-cb-34224

Impacted products

Name
Qemu QEMU 4.1.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-11947",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-11947"
    }
  },
  "description": "QEMU\u662f\u4e00\u5957\u7531\u6cd5\u5e03\u91cc\u65af\u00b7\u8d1d\u62c9(Fabrice Bellard)\u6240\u7f16\u5199\u7684\u3001\u4ee5GPL\u8bb8\u53ef\u8bc1\u5206\u53d1\u6e90\u7801\u7684\u6a21\u62df\u5904\u7406\u5668\uff0c\u5728GNU/Linux\u5e73\u53f0\u4e0a\u4f7f\u7528\u5e7f\u6cdb\u3002\n\nQEMU 4.1.0\u4e2d\u7684block/iscsi.c\u4e2d\u7684iscsi_aio_ioctl_cb\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u8fdb\u7a0b\u5185\u5b58\u4e2d\u7684\u4fe1\u606f\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.qemu.org/?p=qemu.git;a=commit;h=ff0507c239a246fd7215b31c5658fc6a3ee1e4c5",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-00892",
  "openTime": "2021-01-06",
  "patchDescription": "QEMU\u662f\u4e00\u5957\u7531\u6cd5\u5e03\u91cc\u65af\u00b7\u8d1d\u62c9(Fabrice Bellard)\u6240\u7f16\u5199\u7684\u3001\u4ee5GPL\u8bb8\u53ef\u8bc1\u5206\u53d1\u6e90\u7801\u7684\u6a21\u62df\u5904\u7406\u5668\uff0c\u5728GNU/Linux\u5e73\u53f0\u4e0a\u4f7f\u7528\u5e7f\u6cdb\u3002\r\n\r\nQEMU 4.1.0\u4e2d\u7684block/iscsi.c\u4e2d\u7684iscsi_aio_ioctl_cb\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u8fdb\u7a0b\u5185\u5b58\u4e2d\u7684\u4fe1\u606f\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\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-00892\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU 4.1.0"
  },
  "referenceLink": "https://vigilance.fr/vulnerability/QEMU-out-of-bounds-memory-reading-via-iscsi-aio-ioctl-cb-34224",
  "serverity": "\u4f4e",
  "submitTime": "2021-01-04",
  "title": "QEMU\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-00892\uff09"
}

CVE-2020-11947 (GCVE-0-2020-11947)

Vulnerability from cvelistv5

Published

2020-12-31 00:13

Modified

2024-08-04 11:42

Severity ?

CWE

Summary

iscsi_aio_ioctl_cb in block/iscsi.c in QEMU 4.1.0 has a heap-based buffer over-read that may disclose unrelated information from process memory to an attacker.

References

▼	URL	Tags
	https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ff0507c239a246fd7215b31c5658fc6a3ee1e4c5	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/01/13/4	mailing-list, x_refsource_MLIST
	https://security.netapp.com/advisory/ntap-20210212-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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            ],
            "url": "https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=ff0507c239a246fd7215b31c5658fc6a3ee1e4c5"
          },
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            "url": "http://www.openwall.com/lists/oss-security/2021/01/13/4"
          },
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            "tags": [
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            "url": "https://security.netapp.com/advisory/ntap-20210212-0001/"
          }
        ],
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            "vendor_data": [
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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.
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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