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ubuntucveUbuntu.comUB:CVE-2020-28049
HistoryNov 04, 2020 - 12:00 a.m.

CVE-2020-28049

2020-11-0400:00:00
ubuntu.com
ubuntu.com
8
sddm security issue
x server authentication
local attacker access

CVSS2

3.3

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:P/A:N

CVSS3

6.3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS

0

Percentile

5.1%

JSON

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.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchsddm< anyUNKNOWN
ubuntu20.04noarchsddm< anyUNKNOWN
ubuntu16.04noarchsddm< anyUNKNOWN

Related

gentoo 1
mageia 1
fedora 1
osv 4
debian 3
suse 2
nessus 5
debiancve 1
veracode 1
cve 1
prion 1
nvd 1
openvas 5
archlinux 1
alpinelinux 1
cvelist 1
gentoo
gentoo
SDDM: Privilege Escalation
2024-02-03 00:00:00
mageia
mageia
Updated sddm package fixes a security vulnerability
2020-11-10 18:20:00
fedora
fedora
[SECURITY] Fedora 33 Update: sddm-0.19.0-3.fc33
2021-01-24 01:30:36
osv
osv
sddm - security update
2020-11-06 00:00:00
CVE-2020-28049
2020-11-04 19:15:12
sddm - security update
2020-11-05 00:00:00
debian
debian
[SECURITY] [DLA 2436-1] sddm security update
2020-11-06 10:29:25
[SECURITY] [DSA 4783-1] sddm security update
2020-11-05 14:44:17
[SECURITY] [DSA 4783-1] sddm security update
2020-11-05 14:44:17
suse
suse
Security update for sddm (moderate)
2020-11-11 00:00:00
Security update for sddm (moderate)
2020-11-07 00:00:00
nessus
nessus
Fedora 33 : sddm (2021-7066b95c99)
2021-01-25 00:00:00
openSUSE Security Update : sddm (openSUSE-2020-1870)
2020-11-09 00:00:00
Debian DLA-2436-1 : sddm security update
2020-11-09 00:00:00
debiancve
debiancve
CVE-2020-28049
2020-11-04 19:15:12
veracode
veracode
Authentication Bypass
2020-12-06 03:20:44
cve
cve
CVE-2020-28049
2020-11-04 19:15:12
prion
prion
Race condition
2020-11-04 19:15:00
nvd
nvd
CVE-2020-28049
2020-11-04 19:15:12
openvas
openvas
Debian: Security Advisory (DLA-2436-1)
2020-11-07 00:00:00
Mageia: Security Advisory (MGASA-2020-0412)
2022-01-28 00:00:00
Fedora: Security Advisory for sddm (FEDORA-2021-7066b95c99)
2021-01-25 00:00:00
archlinux
archlinux
[ASA-202011-8] sddm: privilege escalation
2020-11-10 00:00:00
alpinelinux
alpinelinux
CVE-2020-28049
2020-11-04 19:15:12
cvelist
cvelist
CVE-2020-28049
2020-11-04 00:00:00

CVSS2

3.3

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:P/A:N

CVSS3

6.3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS

0

Percentile

5.1%

JSON
Related for UB:CVE-2020-28049
gentoo1mageia1fedora1osv4debian3suse2nessus5debiancve1veracode1cve1prion1nvd1openvas5archlinux1alpinelinux1cvelist1