CNVD-2015-00266

Vulnerability from cnvd - Published: 2015-01-14
VLAI
Title
Linux Kernel 'vdso_addr()'函数本地安全绕过漏洞
Description
Linux Kernel是Linux操作系统的内核。 Linux kernel 3.18.2及之前版本arch/x86/vdso/vma.c中的vdso_addr函数未能正确为VDSO区域选择存储单元，这使得本地用户通过在PMD的末端猜测的位置绕过ASLR保护机制。
Severity
低
Patch Name
Linux Kernel 'vdso_addr()'函数本地安全绕过漏洞的补丁
Patch Description
Linux Kernel是Linux操作系统的内核。Linux kernel 3.18.2及之前版本arch/x86/vdso/vma.c中的vdso_addr函数未能正确为VDSO区域选择存储单元，这使得本地用户通过在PMD的末端猜测的位置绕过ASLR保护机制。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

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://www.kernel.org/

Reference
http://www.securityfocus.com/bid/71990
Impacted products
Name
Linux Kernel <=3.18.2
Show details on source website
To clipboard 

{
  "bids": {
    "bid": {
      "bidNumber": "71990"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2014-9585"
    }
  },
  "description": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002 \r\n\r\nLinux kernel 3.18.2\u53ca\u4e4b\u524d\u7248\u672carch/x86/vdso/vma.c\u4e2d\u7684vdso_addr\u51fd\u6570\u672a\u80fd\u6b63\u786e\u4e3aVDSO\u533a\u57df\u9009\u62e9\u5b58\u50a8\u5355\u5143\uff0c\u8fd9\u4f7f\u5f97\u672c\u5730\u7528\u6237\u901a\u8fc7\u5728PMD\u7684\u672b\u7aef\u731c\u6d4b\u7684\u4f4d\u7f6e\u7ed5\u8fc7ASLR\u4fdd\u62a4\u673a\u5236\u3002",
  "discovererName": "Reno Robert",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttps://www.kernel.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-00266",
  "openTime": "2015-01-14",
  "patchDescription": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002Linux kernel 3.18.2\u53ca\u4e4b\u524d\u7248\u672carch/x86/vdso/vma.c\u4e2d\u7684vdso_addr\u51fd\u6570\u672a\u80fd\u6b63\u786e\u4e3aVDSO\u533a\u57df\u9009\u62e9\u5b58\u50a8\u5355\u5143\uff0c\u8fd9\u4f7f\u5f97\u672c\u5730\u7528\u6237\u901a\u8fc7\u5728PMD\u7684\u672b\u7aef\u731c\u6d4b\u7684\u4f4d\u7f6e\u7ed5\u8fc7ASLR\u4fdd\u62a4\u673a\u5236\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": "Linux Kernel \u0027vdso_addr()\u0027\u51fd\u6570\u672c\u5730\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c=3.18.2"
  },
  "referenceLink": "http://www.securityfocus.com/bid/71990",
  "serverity": "\u4f4e",
  "submitTime": "2015-01-13",
  "title": "Linux Kernel \u0027vdso_addr()\u0027\u51fd\u6570\u672c\u5730\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.