CVE-2020-28049

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Source
https://cve.org/CVERecord?id=CVE-2020-28049
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28049.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-28049
Downstream
Related
Published
2020-11-04T19:15:12.137Z
Modified
2026-03-20T11:36:05.259099Z
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

Git / github.com/sddm/sddm

Affected ranges

Type
GIT
Repo
https://github.com/sddm/sddm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c5e7043291a6d237e33c2f666d9937c93d668594
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.19.0"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.8.99
v0.9.0

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "15.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "15.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28049.json"