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ubuntuUbuntuUSN-4533-1
HistorySep 22, 2020 - 12:00 a.m.

LTSP Display Manager vulnerabilities

2020-09-2200:00:00
ubuntu.com
46
ltsp display manager
ubuntu 20.04
vulnerability
ldm
user logins

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.8

Confidence

High

EPSS

0

Percentile

12.6%

Releases

  • Ubuntu 20.04 LTS

Packages

  • ldm - LTSP display manager

Details

Veeti Veteläinen discovered that the LTSP Display Manager (ldm)
incorrectly handled user logins from unsupported shells. A local attacker
could possibly use this issue to gain root privileges. (CVE-2019-20373)

OSVersionArchitecturePackageVersionFilename
Ubuntu20.04noarchldm< 2:2.18.06-1+deb10u1build0.20.04.1UNKNOWN
Ubuntu20.04noarchldm-dbgsym< 2:2.18.06-1+deb10u1build0.20.04.1UNKNOWN
Ubuntu20.04noarchldm-server< 2:2.18.06-1+deb10u1build0.20.04.1UNKNOWN

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.8

Confidence

High

EPSS

0

Percentile

12.6%