Vulnerability-Lookup

CNVD-2018-00646

Vulnerability from cnvd - Published: 2018-01-10

Title

GNU C Library权限提升漏洞

Description

GNU C Library是一种按照LGPL许可协议发布的、开源、免费、方便从网络下载的C的编译程序。 GNU C Library存在权限提升漏洞。该漏洞产生的原因是GNU C Library中的elf/dl-load.c未能正确处理特权（setuid或AT_SECURE）程序的包含$ORIGIN的RPATH和RUNPATH。攻击者可通过当前工作目录中的特洛伊木马程序库利用该漏洞获得特权。

Severity

高

Patch Name

GNU C Library权限提升漏洞的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://sourceware.org/ml/libc-alpha/2017-12/msg00528.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-16997

Impacted products

Name
GNU C Library >=2.19，<=2.26

Show details on source website

JSON

To clipboard

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    "bid": {
      "bidNumber": "102228"
    }
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    "cve": {
      "cveNumber": "CVE-2017-16997"
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  "description": "GNU C Library\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u3001\u5f00\u6e90\u3001\u514d\u8d39\u3001\u65b9\u4fbf\u4ece\u7f51\u7edc\u4e0b\u8f7d\u7684C\u7684\u7f16\u8bd1\u7a0b\u5e8f\u3002\r\n\r\nGNU C Library\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fGNU C Library\u4e2d\u7684elf/dl-load.c\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u6743\uff08setuid\u6216AT_SECURE\uff09\u7a0b\u5e8f\u7684\u5305\u542b$ORIGIN\u7684RPATH\u548cRUNPATH\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u4e2d\u7684\u7279\u6d1b\u4f0a\u6728\u9a6c\u7a0b\u5e8f\u5e93\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u7279\u6743\u3002",
  "discovererName": "Aurelien Jarno",
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  "number": "CNVD-2018-00646",
  "openTime": "2018-01-10",
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  "products": {
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  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-16997",
  "serverity": "\u9ad8",
  "submitTime": "2017-12-18",
  "title": "GNU C Library\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2017-16997 (GCVE-0-2017-16997)

Vulnerability from cvelistv5 – Published: 2017-12-18 01:00 – Updated: 2024-08-05 20:43

Summary

elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.

Severity

No CVSS data available.

CWE

improper RPATH/RUNPATH validation

Assigner

debian mitre root

References

6 references

URL	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=22625	x_refsource_CONFIRM
http://www.securityfocus.com/bid/102228	vdb-entryx_refsource_BID
https://sourceware.org/ml/libc-alpha/2017-12/msg0…	x_refsource_CONFIRM
https://bugs.debian.org/884615	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:3092	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHBA-2019:0327	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
n/a	glibc 2.19 through 2.26	Affected: glibc 2.19 through 2.26

Date Public

2017-12-17 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.