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GHSA-8CWP-MJWW-PQC2

Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2022-05-24 17:24

Details

It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.

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  "affected": [],
  "aliases": [
    "CVE-2020-11934"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-07-29T17:15:00Z",
    "severity": "LOW"
  },
  "details": "It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.",
  "id": "GHSA-8cwp-mjww-pqc2",
  "modified": "2022-05-24T17:24:36Z",
  "published": "2022-05-24T17:24:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11934"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/1880085"
    },
    {
      "type": "WEB",
      "url": "https://ubuntu.com/USN-4424-1"
    }
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  "schema_version": "1.4.0",
  "severity": []
}

CVE-2020-11934 (GCVE-0-2020-11934)

Vulnerability from cvelistv5 – Published: 2020-07-29 16:25 – Updated: 2024-09-17 04:04

Title

Sandbox escape vulnerability via snapctl user-open (xdg-open)

Summary

Severity ?

5.9 (Medium)


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

CWE

Sandbox escape vulnerability

Assigner

canonical

References

URL

Tags

	https://ubuntu.com/USN-4424-1	x_refsource_CONFIRM
	https://launchpad.net/bugs/1880085	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Canonical	snapd	Affected: 2.45.1 , < 2.45.1ubuntu0.2 (custom)

Credits

James Henstridge

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JSON

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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

GHSA-8CWP-MJWW-PQC2

CVE-2020-11934 (GCVE-0-2020-11934)

Tags

Sightings

Nomenclature