UBUNTU-CVE-2020-11934
- Source
- https://ubuntu.com/security/CVE-2020-11934
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11934.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-11934
- Upstream
- Downstream
- Related
- Published
- 2020-07-15T12:00:00Z
- Modified
- 2025-09-08T16:46:05Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N CVSS Calculator
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
It was discovered that snapctl user-open allowed altering the $XDGDATADIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDGDATADIRS 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.
- References
Affected packages
Ubuntu:16.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.45.1ubuntu0.2?arch=source&distro=xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.45.1ubuntu0.2
Affected versions
1.*
1.9
1.9.1.1
1.9.2
2.*
2.0
2.0.1
2.0.2
2.0.3
2.0.5
2.0.8
2.0.9
2.0.10
2.11+0.16.04
2.12+0.16.04
2.13
2.14.2~16.04
2.15.2ubuntu1
2.16ubuntu3
2.17.1ubuntu1
2.20.1ubuntu1
2.21
2.22.2
2.22.3
2.22.6
2.23.1
2.24.1
2.25
2.26.10
2.27.5
2.28.5
2.29.4.2
2.32.3.2
2.32.9
2.33.1ubuntu2
2.34.2
2.34.2ubuntu0.1
2.37.4
2.37.4ubuntu0.1
2.38
2.39.2
2.39.2ubuntu0.2
2.40
2.42.1
2.45.1
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "snap-confine",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "snapd",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.45.1ubuntu0.2"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.45.1ubuntu0.2"
}
],
"availability": "No subscription required"
}
Ubuntu:18.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.45.1+18.04.2?arch=source&distro=bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.45.1+18.04.2
Affected versions
2.*
2.28.5+17.10
2.29.4.1+18.04
2.29.4.2+18.04
2.31.1+18.04
2.32+18.04~pre5
2.32+18.04~pre6
2.32+18.04
2.32.3.2+18.04
2.32.5+18.04
2.32.8+18.04
2.32.9+18.04
2.33.1+18.04ubuntu2
2.34.2+18.04
2.34.2+18.04.1
2.37.1+18.04
2.37.1.1+18.04
2.37.4+18.04
2.37.4+18.04.1
2.38+18.04
2.39.2+18.04
2.40+18.04
2.42.1+18.04
2.45.1+18.04
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "snap-confine",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "snapd",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.45.1+18.04.2"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.45.1+18.04.2"
}
],
"availability": "No subscription required"
}
Ubuntu:20.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.45.1+20.04.2?arch=source&distro=focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.45.1+20.04.2
Affected versions
2.*
2.41+19.10.1
2.42.1+20.04
2.43.3+git1.8109f8
2.44~pre1+20.04
2.44+20.04
2.44.2+20.04
2.44.3+20.04
2.45.1+20.04
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "snap-confine",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "snapd",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.45.1+20.04.2"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.45.1+20.04.2"
}
],
"availability": "No subscription required"
}