cnvd - cnvd-2020-73756

cnvd-2020-73756

Vulnerability from cnvd

Title: GNOME Display Manager授权问题漏洞

Description:

GNOME Display Manager（GDM）是一款显示管理器。

GNOME Display Manager存在授权问题漏洞，攻击者可利用该漏洞可通过GDM的自动锁屏绕过限制，以达到权限获取的目的。

Severity: 中

Patch Name: GNOME Display Manager授权问题漏洞的补丁

Patch Description:

GNOME Display Manager（GDM）是一款显示管理器。

GNOME Display Manager存在授权问题漏洞，攻击者可利用该漏洞可通过GDM的自动锁屏绕过限制，以达到权限获取的目的。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:

厂商已发布了漏洞修复程序，请及时关注更新： https://bugzilla.redhat.com/show_bug.cgi?id=1906812

Reference: https://vigilance.fr/vulnerability/GDM-privilege-escalation-via-Autologin-Lock-Screen-Bypass-34187

Impacted products

Name
Gnome GNOME Display Manager null

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-27837",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-27837"
    }
  },
  "description": "GNOME Display Manager\uff08GDM\uff09\u662f\u4e00\u6b3e\u663e\u793a\u7ba1\u7406\u5668\u3002\n\nGNOME Display Manager\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u901a\u8fc7GDM\u7684\u81ea\u52a8\u9501\u5c4f\u7ed5\u8fc7\u9650\u5236\uff0c\u4ee5\u8fbe\u5230\u6743\u9650\u83b7\u53d6\u7684\u76ee\u7684\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1906812",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-73756",
  "openTime": "2020-12-24",
  "patchDescription": "GNOME Display Manager\uff08GDM\uff09\u662f\u4e00\u6b3e\u663e\u793a\u7ba1\u7406\u5668\u3002\r\n\r\nGNOME Display Manager\u5b58\u5728\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u901a\u8fc7GDM\u7684\u81ea\u52a8\u9501\u5c4f\u7ed5\u8fc7\u9650\u5236\uff0c\u4ee5\u8fbe\u5230\u6743\u9650\u83b7\u53d6\u7684\u76ee\u7684\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": "GNOME Display Manager\u6388\u6743\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Gnome GNOME Display Manager null"
  },
  "referenceLink": "https://vigilance.fr/vulnerability/GDM-privilege-escalation-via-Autologin-Lock-Screen-Bypass-34187",
  "serverity": "\u4e2d",
  "submitTime": "2020-12-23",
  "title": "GNOME Display Manager\u6388\u6743\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-27837 (GCVE-0-2020-27837)

Vulnerability from cvelistv5

Published

2020-12-28 18:34

Modified

2024-08-04 16:25

Severity ?

CWE

CWE-362

Summary

A flaw was found in GDM in versions prior to 3.38.2.1. A race condition in the handling of session shutdown makes it possible to bypass the lock screen for a user that has autologin enabled, accessing their session without authentication. This is similar to CVE-2017-12164, but requires more difficult conditions to exploit.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1906812	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	gdm	Version: prior to 3.38.2.1

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:25:43.322Z",
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            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1906812"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "gdm",
          "vendor": "n/a",
          "versions": [
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              "version": "prior to 3.38.2.1"
            }
          ]
        }
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        }
      ],
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      "providerMetadata": {
        "dateUpdated": "2020-12-28T18:34:04",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1906812"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-27837",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
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                "product": {
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                    {
                      "product_name": "gdm",
                      "version": {
                        "version_data": [
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                            "version_value": "prior to 3.38.2.1"
                          }
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                      }
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                "vendor_name": "n/a"
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            }
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  "cveMetadata": {
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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