UBUNTU-CVE-2020-28049
- Source
- https://ubuntu.com/security/CVE-2020-28049
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28049.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-28049
- Related
- Published
- 2020-11-04T19:15:00Z
- Modified
- 2024-10-15T14:07:46Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
- References
-
- https://ubuntu.com/security/CVE-2020-28049
- https://www.openwall.com/lists/oss-security/2020/11/04/2
- https://github.com/sddm/sddm/commit/be202f533ab98a684c6a007e8d5b4357846bc222
- https://bugzilla.suse.com/show_bug.cgi?id=1177201
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049
- https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog
- https://github.com/sddm/sddm/releases
- https://www.cve.org/CVERecord?id=CVE-2020-28049
Affected packages
Ubuntu:Pro:16.04:LTS / sddm
Package
- Name
- sddm
- Purl
- pkg:deb/ubuntu/sddm?arch=src?distro=esm-apps/xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Ubuntu:Pro:18.04:LTS / sddm
Package
- Name
- sddm
- Purl
- pkg:deb/ubuntu/sddm?arch=src?distro=esm-apps/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected