Vulnerability-Lookup

CNVD-2019-15522

Vulnerability from cnvd - Published: 2019-05-28

Title

FreeBSD rtld execl权限提升漏洞（CNVD-2019-15522）

Description

FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD 7.1和8.0版本中的libexec/rtld-elf/rtld.c的Run-Time Link-Editor (rtld)的_rtld函数中存在权限提升漏洞。该漏洞源于网络系统或产品缺乏有效的权限许可和访问控制措施。攻击者可利用该漏洞获取网站管理员访问权限。

Severity

高

Patch Name

FreeBSD rtld execl权限提升漏洞（CNVD-2019-15522）的补丁

Patch Description

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://www.freebsd.org/where.html

Reference

https://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4146 http://www.securityfocus.com/bid/37154

Impacted products

Name
['FreeBSD FreeBSD 7.1', 'FreeBSD FreeBSD 8.0']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "37154"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2009-4147"
    }
  },
  "description": "FreeBSD\u662fFreeBSD\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nFreeBSD 7.1\u548c8.0\u7248\u672c\u4e2d\u7684libexec/rtld-elf/rtld.c\u7684Run-Time Link-Editor (rtld)\u7684_rtld\u51fd\u6570\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u7f3a\u4e4f\u6709\u6548\u7684\u6743\u9650\u8bb8\u53ef\u548c\u8bbf\u95ee\u63a7\u5236\u63aa\u65bd\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u7f51\u7ad9\u7ba1\u7406\u5458\u8bbf\u95ee\u6743\u9650\u3002",
  "discovererName": "Nikolaos Rangos (Kingcope)",
  "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://www.freebsd.org/where.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-15522",
  "openTime": "2019-05-28",
  "patchDescription": "FreeBSD\u662fFreeBSD\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFreeBSD 7.1\u548c8.0\u7248\u672c\u4e2d\u7684libexec/rtld-elf/rtld.c\u7684Run-Time Link-Editor (rtld)\u7684_rtld\u51fd\u6570\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u7f3a\u4e4f\u6709\u6548\u7684\u6743\u9650\u8bb8\u53ef\u548c\u8bbf\u95ee\u63a7\u5236\u63aa\u65bd\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u7f51\u7ad9\u7ba1\u7406\u5458\u8bbf\u95ee\u6743\u9650\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": "FreeBSD rtld execl\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-15522\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "FreeBSD FreeBSD 7.1",
      "FreeBSD FreeBSD 8.0"
    ]
  },
  "referenceLink": "https://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4146 http://www.securityfocus.com/bid/37154",
  "serverity": "\u9ad8",
  "submitTime": "2019-05-24",
  "title": "FreeBSD rtld execl\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-15522\uff09"
}

CVE-2009-4147 (GCVE-0-2009-4147)

Vulnerability from cvelistv5 – Published: 2009-12-02 19:00 – Updated: 2024-08-07 06:54

Summary

The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1 and 8.0 does not clear the (1) LD_LIBMAP, (2) LD_LIBRARY_PATH, (3) LD_LIBMAP_DISABLE, (4) LD_DEBUG, and (5) LD_ELF_HINTS_PATH environment variables, which allows local users to gain privileges by executing a setuid or setguid program with a modified variable containing an untrusted search path that points to a Trojan horse library, different vectors than CVE-2009-4146.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
http://www.securityfocus.com/bid/37154	vdb-entryx_refsource_BID
http://www.securityfocus.com/archive/1/508146/100…	mailing-listx_refsource_BUGTRAQ
http://secunia.com/advisories/37517	third-party-advisoryx_refsource_SECUNIA
http://people.freebsd.org/~cperciva/rtld.patch	x_refsource_CONFIRM
http://www.securityfocus.com/archive/1/508142/100…	mailing-listx_refsource_BUGTRAQ
http://www.securitytracker.com/id?1023250	vdb-entryx_refsource_SECTRACK
http://packetstormsecurity.com/files/152997/FreeB…	x_refsource_MISC

Date Public

2009-11-30 00:00

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.