cnvd-2021-37530
Vulnerability from cnvd
Title
libyang堆栈溢出漏洞
Description
libyang是一款使用C语言编写的YANG数据建模语言解析器和工具包。 libyang 1.0.225版本及之前版本存在安全漏洞，该漏洞源于堆栈溢出可能会导致通过函数lyxml parse mem()拒绝服务。lyxml_parse_elem函数将被递归调用，这将消耗堆栈空间并导致崩溃。攻击者可利用该漏洞导致拒绝服务。
Severity
中
Patch Name
libyang堆栈溢出漏洞的补丁
Patch Description
libyang是一款使用C语言编写的YANG数据建模语言解析器和工具包。 libyang 1.0.225版本及之前版本存在安全漏洞，该漏洞源于堆栈溢出可能会导致通过函数lyxml parse mem()拒绝服务。lyxml_parse_elem函数将被递归调用，这将消耗堆栈空间并导致崩溃。攻击者可利用该漏洞导致拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新：https://github.com/CESNET/libyang/issues/1453

Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-28903
Impacted products
Name
libyang libyang <=1.0.225
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-28903",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-28903"
    }
  },
  "description": "libyang\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684YANG\u6570\u636e\u5efa\u6a21\u8bed\u8a00\u89e3\u6790\u5668\u548c\u5de5\u5177\u5305\u3002\n\nlibyang 1.0.225\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5806\u6808\u6ea2\u51fa\u53ef\u80fd\u4f1a\u5bfc\u81f4\u901a\u8fc7\u51fd\u6570lyxml parse mem()\u62d2\u7edd\u670d\u52a1\u3002lyxml_parse_elem\u51fd\u6570\u5c06\u88ab\u9012\u5f52\u8c03\u7528\uff0c\u8fd9\u5c06\u6d88\u8017\u5806\u6808\u7a7a\u95f4\u5e76\u5bfc\u81f4\u5d29\u6e83\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://github.com/CESNET/libyang/issues/1453",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-37530",
  "openTime": "2021-05-27",
  "patchDescription": "libyang\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684YANG\u6570\u636e\u5efa\u6a21\u8bed\u8a00\u89e3\u6790\u5668\u548c\u5de5\u5177\u5305\u3002\r\n\r\nlibyang 1.0.225\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5806\u6808\u6ea2\u51fa\u53ef\u80fd\u4f1a\u5bfc\u81f4\u901a\u8fc7\u51fd\u6570lyxml parse mem()\u62d2\u7edd\u670d\u52a1\u3002lyxml_parse_elem\u51fd\u6570\u5c06\u88ab\u9012\u5f52\u8c03\u7528\uff0c\u8fd9\u5c06\u6d88\u8017\u5806\u6808\u7a7a\u95f4\u5e76\u5bfc\u81f4\u5d29\u6e83\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "libyang\u5806\u6808\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libyang libyang \u003c=1.0.225"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-28903",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-21",
  "title": "libyang\u5806\u6808\u6ea2\u51fa\u6f0f\u6d1e"
}


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