Vulnerability-Lookup

CNVD-2017-06995

Vulnerability from cnvd - Published: 2017-05-19

Title

Gnulib缓冲区溢出漏洞

Description

Gnulib是一个支持多系统运行的GNU可移植性库。 Gnulib 2017-04-26之前版本中的time_rz.c文件的save_abbr函数存在堆缓冲区溢出漏洞。攻击者可借助TZ环境变量利用该漏洞执行任意代码。

Severity

高

Patch Name

Gnulib缓冲区溢出漏洞的补丁

Patch Description

Gnulib是一个支持多系统运行的GNU可移植性库。 Gnulib 2017-04-26之前版本中的time_rz.c文件的save_abbr函数存在堆缓冲区溢出漏洞。攻击者可借助TZ环境变量利用该漏洞执行任意代码。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

用户可参考如下厂商提供的安全补丁以修复该漏洞： http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commit;h=94e01571507835ff59dd8ce2a0b56a4b566965a4

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1445185 https://nvd.nist.gov/vuln/detail/CVE-2017-7476

Impacted products

Name
Gnulib Gnulib <2017-04-26

Show details on source website

JSON

To clipboard

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    "bid": {
      "bidNumber": "98098"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7476",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7476"
    }
  },
  "description": "Gnulib\u662f\u4e00\u4e2a\u652f\u6301\u591a\u7cfb\u7edf\u8fd0\u884c\u7684GNU\u53ef\u79fb\u690d\u6027\u5e93\u3002\r\n\r\nGnulib 2017-04-26\u4e4b\u524d\u7248\u672c\u4e2d\u7684time_rz.c\u6587\u4ef6\u7684save_abbr\u51fd\u6570\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9TZ\u73af\u5883\u53d8\u91cf\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "discovererName": "P\u00e1draig Brady",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commit;h=94e01571507835ff59dd8ce2a0b56a4b566965a4",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-06995",
  "openTime": "2017-05-19",
  "patchDescription": "Gnulib\u662f\u4e00\u4e2a\u652f\u6301\u591a\u7cfb\u7edf\u8fd0\u884c\u7684GNU\u53ef\u79fb\u690d\u6027\u5e93\u3002\r\n\r\nGnulib 2017-04-26\u4e4b\u524d\u7248\u672c\u4e2d\u7684time_rz.c\u6587\u4ef6\u7684save_abbr\u51fd\u6570\u5b58\u5728\u5806\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9TZ\u73af\u5883\u53d8\u91cf\u5229\u7528\u8be5\u6f0f\u6d1e\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": "Gnulib\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Gnulib Gnulib \u003c2017-04-26"
  },
  "referenceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=1445185\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-7476",
  "serverity": "\u9ad8",
  "submitTime": "2017-05-03",
  "title": "Gnulib\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2017-7476 (GCVE-0-2017-7476)

Vulnerability from cvelistv5 – Published: 2017-05-02 17:00 – Updated: 2024-08-05 16:04

Summary

Gnulib before 2017-04-26 has a heap-based buffer overflow with the TZ environment variable. The error is in the save_abbr function in time_rz.c.

Severity

No CVSS data available.

CWE

heap-based buffer overflow

Assigner

redhat redhat root

References

5 references

URL	Tags
https://security-tracker.debian.org/tracker/CVE-2…	x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1445185	x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1444774	x_refsource_CONFIRM
http://git.savannah.gnu.org/gitweb/?p=gnulib.git%…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/98098	vdb-entryx_refsource_BID

Impacted products

1 product

Vendor	Product	Version
n/a	Gnulib before 2017-04-26	Affected: Gnulib before 2017-04-26

Date Public

2017-05-02 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T16:04:11.728Z",
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          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "Gnulib before 2017-04-26",
          "vendor": "n/a",
          "versions": [
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    "dateUpdated": "2024-08-05T16:04:11.728Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.