CVE-2020-28049
CVSS V2 Low 3.3
CVSS V3 Medium 6.3
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.
Overview
- CVE ID
- CVE-2020-28049
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-11-04T19:15:12
- Last Modified Date
- 2021-01-28T18:53:38
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:* | 1 | OR | 0.19.0 | |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- LOCAL
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 3.3
- Severity
- LOW
- Exploitability Score
- 3.4
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.3
- Base Severity
- MEDIUM
- Exploitability Score
- 1
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog | Release Notes Third Party Advisory |
| https://github.com/sddm/sddm/releases | Release Notes Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4783 | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-28049 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28049 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:25:41 | Added to TrackCVE | |||
| 2022-12-05 16:06:21 | 2020-11-04T19:15Z | 2020-11-04T19:15:12 | CVE Published Date | updated |
| 2022-12-05 16:06:21 | 2021-01-28T18:53:38 | CVE Modified Date | updated | |
| 2022-12-05 16:06:21 | Analyzed | Vulnerability Status | updated |