CVE-2017-8900

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Summary

CVECVE-2017-8900
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-05-12 07:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionLightDM through 1.22.0, when systemd is used in Ubuntu 16.10 and 17.x, allows physically proximate attackers to bypass intended AppArmor restrictions and visit the home directories of arbitrary users by establishing a guest session.

Risk And Classification

Primary CVSS: v3.0 4.6 MEDIUM from [email protected]

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: NVD-CWE-noinfo | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary4.6MEDIUMCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 16.10 All All All
Operating System Canonical Ubuntu Linux 17.04 All All All
Application Lightdm Project Lightdm All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-3285-1: LightDM vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Patch, Vendor Advisory
LightDM CVE-2017-8900 Local Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
CVE-2017-8900 in Ubuntu af854a3a-2127-422b-91ae-364da2661108 people.canonical.com Patch, Vendor Advisory
Bug #1663157 “Guest session processes are not confined in 16.10 ...” : Bugs : lightdm package : Ubuntu af854a3a-2127-422b-91ae-364da2661108 launchpad.net Issue Tracking, Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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