cnvd-2022-05481
Vulnerability from cnvd
Title
Expat存在未明漏洞
Description
Expat是一款使用C语言编写的快速流式XML解析器。 Expat存在安全漏洞，该漏洞源于在2.4.3之前的Expat(又名libexpat)中，xmlparse.c中的storeAtts函数左移29(或更多)位可能会导致realloc错误行为(例如，分配的字节太少，或只释放内存)。 目前没有详细的漏洞细节提供。
Severity
中
Patch Name
Expat存在未明漏洞的补丁
Patch Description
Expat是一款使用C语言编写的快速流式XML解析器。 Expat存在安全漏洞，该漏洞源于在2.4.3之前的Expat(又名libexpat)中，xmlparse.c中的storeAtts函数左移29(或更多)位可能会导致realloc错误行为(例如，分配的字节太少，或只释放内存)。 目前没有详细的漏洞细节提供。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://bugzilla.mozilla.org/show_bug.cgi?id=1217609

Reference
https://github.com/libexpat/libexpat/issues/531
Impacted products
Name
Expat Expat <2.4.3
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-45960"
    }
  },
  "description": "Expat\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u5feb\u901f\u6d41\u5f0fXML\u89e3\u6790\u5668\u3002\n\nExpat\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u57282.4.3\u4e4b\u524d\u7684Expat(\u53c8\u540dlibexpat)\u4e2d\uff0cxmlparse.c\u4e2d\u7684storeAtts\u51fd\u6570\u5de6\u79fb29(\u6216\u66f4\u591a)\u4f4d\u53ef\u80fd\u4f1a\u5bfc\u81f4realloc\u9519\u8bef\u884c\u4e3a(\u4f8b\u5982\uff0c\u5206\u914d\u7684\u5b57\u8282\u592a\u5c11\uff0c\u6216\u53ea\u91ca\u653e\u5185\u5b58)\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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://bugzilla.mozilla.org/show_bug.cgi?id=1217609",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-05481",
  "openTime": "2022-01-20",
  "patchDescription": "Expat\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u5feb\u901f\u6d41\u5f0fXML\u89e3\u6790\u5668\u3002\r\n\r\nExpat\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u57282.4.3\u4e4b\u524d\u7684Expat(\u53c8\u540dlibexpat)\u4e2d\uff0cxmlparse.c\u4e2d\u7684storeAtts\u51fd\u6570\u5de6\u79fb29(\u6216\u66f4\u591a)\u4f4d\u53ef\u80fd\u4f1a\u5bfc\u81f4realloc\u9519\u8bef\u884c\u4e3a(\u4f8b\u5982\uff0c\u5206\u914d\u7684\u5b57\u8282\u592a\u5c11\uff0c\u6216\u53ea\u91ca\u653e\u5185\u5b58)\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "Expat\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Expat Expat \u003c2.4.3"
  },
  "referenceLink": "https://github.com/libexpat/libexpat/issues/531",
  "serverity": "\u4e2d",
  "submitTime": "2022-01-05",
  "title": "Expat\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}


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