cnvd - cnvd-2023-80119

cnvd-2023-80119

Vulnerability from cnvd

Title: QEMU缓冲区溢出漏洞（CNVD-2023-80119）

Description:

QEMU（Quick Emulator）是一套模拟处理器软件。该软件具有速度快、跨平台等特点。

QEMU存在缓冲区溢出漏洞，该漏洞源于qxl_cursor（）中的双重提取可能导致堆缓冲区溢出。恶意特权攻击者可利用该漏洞使主机上的QEMU进程崩溃，或者可能在QEMU进程的上下文中执行任意代码。

Severity: 中

Patch Name: QEMU缓冲区溢出漏洞（CNVD-2023-80119）的补丁

Patch Description:

QEMU（Quick Emulator）是一套模拟处理器软件。该软件具有速度快、跨平台等特点。

QEMU存在缓冲区溢出漏洞，该漏洞源于qxl_cursor（）中的双重提取可能导致堆缓冲区溢出。恶意特权攻击者可利用该漏洞使主机上的QEMU进程崩溃，或者可能在QEMU进程的上下文中执行任意代码。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，详情请关注厂商主页： https://www.qemu.org/

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-4207

Impacted products

Name
Qemu QEMU <7.0.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-4207",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-4207"
    }
  },
  "description": "QEMU\uff08Quick Emulator\uff09\u662f\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u5177\u6709\u901f\u5ea6\u5feb\u3001\u8de8\u5e73\u53f0\u7b49\u7279\u70b9\u3002\n\nQEMU\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eqxl_cursor\uff08\uff09\u4e2d\u7684\u53cc\u91cd\u63d0\u53d6\u53ef\u80fd\u5bfc\u81f4\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u6076\u610f\u7279\u6743\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\u5d29\u6e83\uff0c\u6216\u8005\u53ef\u80fd\u5728QEMU\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a \r\nhttps://www.qemu.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-80119",
  "openTime": "2023-10-27",
  "patchDescription": "QEMU\uff08Quick Emulator\uff09\u662f\u4e00\u5957\u6a21\u62df\u5904\u7406\u5668\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u5177\u6709\u901f\u5ea6\u5feb\u3001\u8de8\u5e73\u53f0\u7b49\u7279\u70b9\u3002\r\n\r\nQEMU\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eqxl_cursor\uff08\uff09\u4e2d\u7684\u53cc\u91cd\u63d0\u53d6\u53ef\u80fd\u5bfc\u81f4\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u6076\u610f\u7279\u6743\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u4e3b\u673a\u4e0a\u7684QEMU\u8fdb\u7a0b\u5d29\u6e83\uff0c\u6216\u8005\u53ef\u80fd\u5728QEMU\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4efb\u610f\u4ee3\u7801\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\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2023-80119\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Qemu QEMU \u003c7.0.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-4207",
  "serverity": "\u4e2d",
  "submitTime": "2022-05-24",
  "title": "QEMU\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2023-80119\uff09"
}

CVE-2021-4207 (GCVE-0-2021-4207)

Vulnerability from cvelistv5

Published

2022-04-29 16:07

Modified

2025-03-21 18:03

Severity ?

CWE

CWE-362 - ->CWE-120

Summary

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2036966	x_refsource_MISC
	https://starlabs.sg/advisories/21-4207/	x_refsource_MISC
	https://www.debian.org/security/2022/dsa-5133	vendor-advisory, x_refsource_DEBIAN
	https://security.gentoo.org/glsa/202208-27	vendor-advisory, x_refsource_GENTOO
	https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	QEMU	Version: qemu-kvm 7.0.0

Show details on NVD website

JSON

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          }
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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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