Vulnerability-Lookup

CNVD-2018-16694

Vulnerability from cnvd - Published: 2018-08-28

Title

Fedora和Red Hat Enterprise Linux未授权访问漏洞

Description

Fedora是由Fedora项目社区开发、美国红帽（Red Hat）公司赞助的一套基于Linux的操作系统。Red Hat Enterprise Linux（RHEL）是美国红帽（Red Hat）公司维护和发布的一套面向企业用户的Linux操作系统。 Fedora和Red Hat Enterprise Linux 2.11.4-1.fc28之前版本中存在安全漏洞，该漏洞源于程序将/sbin/nologin和/usr/sbin/nologin添加到/etc/shells中。攻击者可利用该漏洞访问系统。

Severity

中

Patch Name

Fedora和Red Hat Enterprise Linux未授权访问漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： http://getfedora.org/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-1113

Impacted products

Name
Red Hat Enterprise Linux <2.11.4-1.fc28

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-1113",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1113"
    }
  },
  "description": "Fedora\u662f\u7531Fedora\u9879\u76ee\u793e\u533a\u5f00\u53d1\u3001\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u8d5e\u52a9\u7684\u4e00\u5957\u57fa\u4e8eLinux\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002Red Hat Enterprise Linux\uff08RHEL\uff09\u662f\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u7ef4\u62a4\u548c\u53d1\u5e03\u7684\u4e00\u5957\u9762\u5411\u4f01\u4e1a\u7528\u6237\u7684Linux\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFedora\u548cRed Hat Enterprise Linux 2.11.4-1.fc28\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5c06/sbin/nologin\u548c/usr/sbin/nologin\u6dfb\u52a0\u5230/etc/shells\u4e2d\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u7cfb\u7edf\u3002",
  "discovererName": "Doran Moppert",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttp://getfedora.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-16694",
  "openTime": "2018-08-28",
  "patchDescription": "Fedora\u662f\u7531Fedora\u9879\u76ee\u793e\u533a\u5f00\u53d1\u3001\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u8d5e\u52a9\u7684\u4e00\u5957\u57fa\u4e8eLinux\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002Red Hat Enterprise Linux\uff08RHEL\uff09\u662f\u7f8e\u56fd\u7ea2\u5e3d\uff08Red Hat\uff09\u516c\u53f8\u7ef4\u62a4\u548c\u53d1\u5e03\u7684\u4e00\u5957\u9762\u5411\u4f01\u4e1a\u7528\u6237\u7684Linux\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFedora\u548cRed Hat Enterprise Linux 2.11.4-1.fc28\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5c06/sbin/nologin\u548c/usr/sbin/nologin\u6dfb\u52a0\u5230/etc/shells\u4e2d\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u7cfb\u7edf\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": "Fedora\u548cRed Hat Enterprise Linux\u672a\u6388\u6743\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Red Hat Enterprise Linux \u003c2.11.4-1.fc28"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-1113",
  "serverity": "\u4e2d",
  "submitTime": "2018-07-05",
  "title": "Fedora\u548cRed Hat Enterprise Linux\u672a\u6388\u6743\u8bbf\u95ee\u6f0f\u6d1e"
}

CVE-2018-1113 (GCVE-0-2018-1113)

Vulnerability from cvelistv5 – Published: 2018-07-02 18:00 – Updated: 2024-08-05 03:51

Summary

setup before version 2.11.4-1.fc28 in Fedora and Red Hat Enterprise Linux added /sbin/nologin and /usr/sbin/nologin to /etc/shells. This violates security assumptions made by pam_shells and some daemons which allow access based on a user's shell being listed in /etc/shells. Under some circumstances, users which had their shell changed to /sbin/nologin could still access the system.

Severity

4.8 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

CWE

CWE-285

Assigner

redhat redhat root Scorecard

References

3 references

URL	Tags
https://access.redhat.com/errata/RHSA-2018:3249	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHBA-2019:0327	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
[UNKNOWN]	setup	Affected: setup 2.11.4-1.fc28

Date Public

2018-04-24 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T03:51:48.931Z",
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            "url": "https://access.redhat.com/errata/RHBA-2019:0327"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "setup",
          "vendor": "[UNKNOWN]",
          "versions": [
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      ],
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      "descriptions": [
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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.
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Action not permitted

CNVD-2018-16694

CVE-2018-1113 (GCVE-0-2018-1113)

Tags

Sightings

Nomenclature

Related by attack behaviour