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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.
Publish Date : 2020-11-04 Last Update Date : 2021-01-28
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CVSS Scores & Vulnerability Types
| CVSS Score |
3.3 |
| Confidentiality Impact |
Partial
(There is considerable informational disclosure.) |
| Integrity Impact |
Partial
(Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.) |
| Availability Impact |
None
(There is no impact to the availability of the system.) |
| Access Complexity |
Medium
(The access conditions are somewhat specialized. Some preconditions must be satistified to exploit) |
| Authentication |
Not required
(Authentication is not required to exploit the vulnerability.) |
| Gained Access |
None |
| Vulnerability Type(s) |
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| CWE ID |
362 |
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Products Affected By CVE-2020-28049
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Number Of Affected Versions By Product
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References For CVE-2020-28049
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Metasploit Modules Related To CVE-2020-28049
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