Vulnerability Monitor

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CVE-2017-8900

LightDM 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.

Published

2017-05-12T07:29:00.233

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 4.6 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	lightdm_project	lightdm	≤ 1.22.0	Yes
Operating System	canonical	ubuntu_linux	16.10	No
Operating System	canonical	ubuntu_linux	17.04	No

References

http://www.securityfocus.com/bid/98554 Third Party Advisory, VDB Entry ([email protected])
https://launchpad.net/bugs/1663157 Issue Tracking, Patch, Vendor Advisory ([email protected])
https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html Patch, Vendor Advisory ([email protected])
https://www.ubuntu.com/usn/usn-3285-1/ Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/98554 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://launchpad.net/bugs/1663157 Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.ubuntu.com/usn/usn-3285-1/ Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)