ALPINE-CVE-2020-28049

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Source
https://security.alpinelinux.org/vuln/CVE-2020-28049
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2020-28049
Upstream
Published
2020-11-04T19:15:12Z
Modified
2026-11-03T06:32:25Z
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

Affected packages

Alpine:v3.13
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.14
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.15
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.16
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.17
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.18
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.19
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.20
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.21
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.22
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.23
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"
Alpine:v3.24
sddm

Package

Name
sddm
Purl
pkg:apk/alpine/sddm?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.19.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-28049.json"