Vulnerability-Lookup

CNVD-2021-28785

Vulnerability from cnvd - Published: 2021-04-16

Title

oddjob路径遍历漏洞

Description

oddjob是一款用于D-Bus的具有公共网关接口功能的软件包。 oddjob 0.34.5之前版本和0.34.6之前版本中的mkhomedir工具存在路径遍历漏洞，该漏洞源于在创建home目录期间，mkhomedir将/etc/skel目录复制到新创建的home目录中，并在没有正确检查homedir路径的情况下将其所有权更改为home用户。攻击者可借助特制的符号链接利用该漏洞提升权限。

Severity

低

Patch Name

oddjob路径遍历漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch

Reference

https://access.redhat.com/security/cve/cve-2020-10737

Impacted products

Name
['oddjob oddjob <0.34.5', 'oddjob oddjob <0.34.6']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-10737"
    }
  },
  "description": "oddjob\u662f\u4e00\u6b3e\u7528\u4e8eD-Bus\u7684\u5177\u6709\u516c\u5171\u7f51\u5173\u63a5\u53e3\u529f\u80fd\u7684\u8f6f\u4ef6\u5305\u3002\n\noddjob 0.34.5\u4e4b\u524d\u7248\u672c\u548c0.34.6\u4e4b\u524d\u7248\u672c\u4e2d\u7684mkhomedir\u5de5\u5177\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u521b\u5efahome\u76ee\u5f55\u671f\u95f4\uff0cmkhomedir\u5c06/etc/skel\u76ee\u5f55\u590d\u5236\u5230\u65b0\u521b\u5efa\u7684home\u76ee\u5f55\u4e2d\uff0c\u5e76\u5728\u6ca1\u6709\u6b63\u786e\u68c0\u67e5homedir\u8def\u5f84\u7684\u60c5\u51b5\u4e0b\u5c06\u5176\u6240\u6709\u6743\u66f4\u6539\u4e3ahome\u7528\u6237\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u7b26\u53f7\u94fe\u63a5\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\u3002",
  "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://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28785",
  "openTime": "2021-04-16",
  "patchDescription": "oddjob\u662f\u4e00\u6b3e\u7528\u4e8eD-Bus\u7684\u5177\u6709\u516c\u5171\u7f51\u5173\u63a5\u53e3\u529f\u80fd\u7684\u8f6f\u4ef6\u5305\u3002\r\n\r\noddjob 0.34.5\u4e4b\u524d\u7248\u672c\u548c0.34.6\u4e4b\u524d\u7248\u672c\u4e2d\u7684mkhomedir\u5de5\u5177\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u521b\u5efahome\u76ee\u5f55\u671f\u95f4\uff0cmkhomedir\u5c06/etc/skel\u76ee\u5f55\u590d\u5236\u5230\u65b0\u521b\u5efa\u7684home\u76ee\u5f55\u4e2d\uff0c\u5e76\u5728\u6ca1\u6709\u6b63\u786e\u68c0\u67e5homedir\u8def\u5f84\u7684\u60c5\u51b5\u4e0b\u5c06\u5176\u6240\u6709\u6743\u66f4\u6539\u4e3ahome\u7528\u6237\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u7b26\u53f7\u94fe\u63a5\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\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": "oddjob\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "oddjob oddjob \u003c0.34.5",
      "oddjob oddjob \u003c0.34.6"
    ]
  },
  "referenceLink": "https://access.redhat.com/security/cve/cve-2020-10737",
  "serverity": "\u4f4e",
  "submitTime": "2020-05-09",
  "title": "oddjob\u8def\u5f84\u904d\u5386\u6f0f\u6d1e"
}

CVE-2020-10737 (GCVE-0-2020-10737)

Vulnerability from cvelistv5 – Published: 2020-05-27 00:00 – Updated: 2024-08-04 11:14

Summary

A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home's user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory's unprivileged user.

Severity

6.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-362

Assigner

redhat redhat root

References

2 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…
https://pagure.io/oddjob/c/10b8aaa1564b723a005b53…

Impacted products

1 product

Vendor	Product	Version
Red Hat	oddjob	Affected: before 0.34.5 Affected: before 0.34.6

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:14:14.865Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10737"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "oddjob",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "before 0.34.5"
            },
            {
              "status": "affected",
              "version": "before 0.34.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home\u0027s user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory\u0027s unprivileged user."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2022-10-07T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
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        },
        {
          "url": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2020-10737",
    "datePublished": "2020-05-27T00:00:00.000Z",
    "dateReserved": "2020-03-20T00:00:00.000Z",
    "dateUpdated": "2024-08-04T11:14:14.865Z",
    "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.