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CVE-2020-28049

nvd nist
Published: Nov 4, 2020Modified: Nov 21, 2024

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6.3
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploitability: 1.0 / Impact: 5.2
Source: NVD

Description

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.

Affected (6)

Products: Sddm Project: Sddm · Opensuse: Leap · Debian: Debian Linux · +1 more
Show all products
Sddm Project: Sddm · Opensuse: Leap · Debian: Debian Linux · Fedoraproject: Fedora
Sddm Project
1 product
Sddm
Opensuse
1 product
Leap
Debian
1 product
Debian Linux
Fedoraproject
1 product
Fedora
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Sddm
Before 0.19.0
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Opensuse
Leap
Version 15.1
Leap
Version 15.2
Configuration C
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 9.0
Configuration D
1 vulnerable
Vulnerable SoftwareAffected Versions
Fedora
Version 33

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (16)

Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
ExploitIssue TrackingThird Party Advisory
Source: cve@mitre.org
Release NotesThird Party Advisory
Source: cve@mitre.org
Release NotesThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitIssue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.