Vulnerability-Lookup

CNVD-2022-08917

Vulnerability from cnvd - Published: 2022-02-09

Title

Flatpak路径遍历漏洞

Description

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak存在安全漏洞，攻击者可利用该漏洞通过恶意应用程序替换appstream util二进制文件，并可能执行其他恶意操作。

Severity

中

Patch Name

Flatpak路径遍历漏洞的补丁

Patch Description

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak存在安全漏洞，攻击者可利用该漏洞通过恶意应用程序替换appstream util二进制文件，并可能执行其他恶意操作。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx

Reference

https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa

Impacted products

Name
['Flatpak Flatpak <1.10.7', 'Flatpak Flatpak >=1.11.1，<1.12.4', 'Flatpak Flatpak <1.2.2']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-21682"
    }
  },
  "description": "Flatpak\u662f\u4e00\u5957\u7528\u4e8eLinux\u684c\u9762\u5e94\u7528\u8ba1\u7b97\u673a\u73af\u5883\u7684\u5e94\u7528\u7a0b\u5e8f\u865a\u62df\u5316\u7cfb\u7edf\u3002\n\nFlatpak\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u5e94\u7528\u7a0b\u5e8f\u66ff\u6362appstream util\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u5e76\u53ef\u80fd\u6267\u884c\u5176\u4ed6\u6076\u610f\u64cd\u4f5c\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://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-08917",
  "openTime": "2022-02-09",
  "patchDescription": "Flatpak\u662f\u4e00\u5957\u7528\u4e8eLinux\u684c\u9762\u5e94\u7528\u8ba1\u7b97\u673a\u73af\u5883\u7684\u5e94\u7528\u7a0b\u5e8f\u865a\u62df\u5316\u7cfb\u7edf\u3002\r\n\r\nFlatpak\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u5e94\u7528\u7a0b\u5e8f\u66ff\u6362appstream util\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u5e76\u53ef\u80fd\u6267\u884c\u5176\u4ed6\u6076\u610f\u64cd\u4f5c\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": "Flatpak\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Flatpak Flatpak \u003c1.10.7",
      "Flatpak Flatpak \u003e=1.11.1\uff0c\u003c1.12.4",
      "Flatpak Flatpak \u003c1.2.2"
    ]
  },
  "referenceLink": "https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa",
  "serverity": "\u4e2d",
  "submitTime": "2022-01-17",
  "title": "Flatpak\u8def\u5f84\u904d\u5386\u6f0f\u6d1e"
}

CVE-2022-21682 (GCVE-0-2022-21682)

Vulnerability from cvelistv5 – Published: 2022-01-13 00:00 – Updated: 2024-08-03 02:46

Title

flatpak-builder can access files outside the build directory.

Summary

Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`.

Severity

7.7 (High)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/flatpak/flatpak/security/advis…
https://github.com/flatpak/flatpak/commit/445bdde…
https://github.com/flatpak/flatpak/commit/4d11f77…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.debian.org/security/2022/dsa-5049	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202312-12	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
flatpak	flatpak	Affected: >= 1.11.0, < 1.12.3 Affected: < 1.10.6

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:46:39.409Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"
          },
          {
            "name": "FEDORA-2022-825ca6bf2b",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/"
          },
          {
            "name": "DSA-5049",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5049"
          },
          {
            "name": "FEDORA-2022-7e328bd66c",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/"
          },
          {
            "name": "GLSA-202312-12",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202312-12"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "flatpak",
          "vendor": "flatpak",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.11.0, \u003c 1.12.3"
            },
            {
              "status": "affected",
              "version": "\u003c 1.10.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-23T10:06:21.099Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a"
        },
        {
          "url": "https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa"
        },
        {
          "name": "FEDORA-2022-825ca6bf2b",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/"
        },
        {
          "name": "DSA-5049",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5049"
        },
        {
          "name": "FEDORA-2022-7e328bd66c",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXKBERLJRYV7KXKGXOLI6IOXVBQNN4DP/"
        },
        {
          "name": "GLSA-202312-12",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202312-12"
        }
      ],
      "source": {
        "advisory": "GHSA-8ch7-5j3h-g4fx",
        "discovery": "UNKNOWN"
      },
      "title": "flatpak-builder can access files outside the build directory."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-21682",
    "datePublished": "2022-01-13T00:00:00.000Z",
    "dateReserved": "2021-11-16T00:00:00.000Z",
    "dateUpdated": "2024-08-03T02:46:39.409Z",
    "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.

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CNVD-2022-08917

CVE-2022-21682 (GCVE-0-2022-21682)

Tags

Sightings

Nomenclature

Related by attack behaviour