cnvd - cnvd-2022-31831

CNVD-2022-31831

Vulnerability from cnvd - Published: 2022-04-24

Title

Google fscrypt输入验证错误漏洞

Description

Google Fscrypt是美国谷歌（Google）公司的一个开源高级工具。用于管理 Linux 本机文件系统加密。 Google fscrypt存在输入验证错误漏洞，该漏洞源于用户提供的输入未充分验证，远程攻击者可利用该漏洞创建阻止其他用户登录的fscrypt元数据文件来导致拒绝服务进入系统。

Severity

低

Patch Name

Google fscrypt输入验证错误漏洞的补丁

Patch Description

Google Fscrypt是美国谷歌（Google）公司的一个开源高级工具。用于管理 Linux 本机文件系统加密。 Google fscrypt存在输入验证错误漏洞，该漏洞源于用户提供的输入未充分验证，远程攻击者可利用该漏洞创建阻止其他用户登录的fscrypt元数据文件来导致拒绝服务进入系统。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://github.com/google/fscrypt/pull/346

Reference

https://github.com/google/fscrypt/pull/346

Impacted products

Name
Google fscrypt <0.3.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-25327",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-25327"
    }
  },
  "description": "Google Fscrypt\u662f\u7f8e\u56fd\u8c37\u6b4c\uff08Google\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u9ad8\u7ea7\u5de5\u5177\u3002\u7528\u4e8e\u7ba1\u7406 Linux \u672c\u673a\u6587\u4ef6\u7cfb\u7edf\u52a0\u5bc6\u3002\n\nGoogle fscrypt\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u63d0\u4f9b\u7684\u8f93\u5165\u672a\u5145\u5206\u9a8c\u8bc1\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u521b\u5efa\u963b\u6b62\u5176\u4ed6\u7528\u6237\u767b\u5f55\u7684fscrypt\u5143\u6570\u636e\u6587\u4ef6\u6765\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u8fdb\u5165\u7cfb\u7edf\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://github.com/google/fscrypt/pull/346",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-31831",
  "openTime": "2022-04-24",
  "patchDescription": "Google Fscrypt\u662f\u7f8e\u56fd\u8c37\u6b4c\uff08Google\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u9ad8\u7ea7\u5de5\u5177\u3002\u7528\u4e8e\u7ba1\u7406 Linux \u672c\u673a\u6587\u4ef6\u7cfb\u7edf\u52a0\u5bc6\u3002\r\n\r\nGoogle fscrypt\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u63d0\u4f9b\u7684\u8f93\u5165\u672a\u5145\u5206\u9a8c\u8bc1\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u521b\u5efa\u963b\u6b62\u5176\u4ed6\u7528\u6237\u767b\u5f55\u7684fscrypt\u5143\u6570\u636e\u6587\u4ef6\u6765\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u8fdb\u5165\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": "Google fscrypt\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Google fscrypt \u003c0.3.3"
  },
  "referenceLink": "https://github.com/google/fscrypt/pull/346",
  "serverity": "\u4f4e",
  "submitTime": "2022-02-28",
  "title": "Google fscrypt\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2022-25327 (GCVE-0-2022-25327)

Vulnerability from cvelistv5 – Published: 2022-02-25 11:00 – Updated: 2025-04-21 13:56

Summary

The PAM module for fscrypt doesn't adequately validate fscrypt metadata files, allowing users to create malicious metadata files that prevent other users from logging in. A local user can cause a denial of service by creating a fscrypt metadata file that prevents other users from logging into the system. We recommend upgrading to version 0.3.3 or above

Severity ?

5.5 (Medium)


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

CWE

CWE-255 - Credentials Management

Assigner

Google

References

URL

Tags

https://github.com/google/fscrypt/pull/346

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Google LLC	fscrypt	Affected: unspecified , ≤ 0.3.2 (custom)

Credits

Matthias Gerstner of SUSE

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T04:36:06.870Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/google/fscrypt/pull/346"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-25327",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-21T13:36:10.800295Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-21T13:56:22.478Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "fscrypt",
          "vendor": "Google LLC",
          "versions": [
            {
              "lessThanOrEqual": "0.3.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Matthias Gerstner of SUSE"
        }
      ],
      "datePublic": "2022-02-16T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The PAM module for fscrypt doesn\u0027t adequately validate fscrypt metadata files, allowing users to create malicious metadata files that prevent other users from logging in. A local user can cause a denial of service by creating a fscrypt metadata file that prevents other users from logging into the system. We recommend upgrading to version 0.3.3 or above"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-255",
              "description": "CWE-255 Credentials Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-02-25T11:00:14.000Z",
        "orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "shortName": "Google"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/google/fscrypt/pull/346"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Local Denial of Service in fscrypt PAM module",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@google.com",
          "DATE_PUBLIC": "2022-02-16T11:00:00.000Z",
          "ID": "CVE-2022-25327",
          "STATE": "PUBLIC",
          "TITLE": "Local Denial of Service in fscrypt PAM module"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "fscrypt",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "0.3.2"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Google LLC"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Matthias Gerstner of SUSE"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The PAM module for fscrypt doesn\u0027t adequately validate fscrypt metadata files, allowing users to create malicious metadata files that prevent other users from logging in. A local user can cause a denial of service by creating a fscrypt metadata file that prevents other users from logging into the system. We recommend upgrading to version 0.3.3 or above"
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-255 Credentials Management"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/google/fscrypt/pull/346",
              "refsource": "MISC",
              "url": "https://github.com/google/fscrypt/pull/346"
            }
          ]
        },
        "source": {
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
    "assignerShortName": "Google",
    "cveId": "CVE-2022-25327",
    "datePublished": "2022-02-25T11:00:14.437Z",
    "dateReserved": "2022-02-18T00:00:00.000Z",
    "dateUpdated": "2025-04-21T13:56:22.478Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CNVD-2022-31831

CVE-2022-25327 (GCVE-0-2022-25327)

Tags

Sightings

Nomenclature