Vulnerability CVE-2014-5195

Vulnerability Name:

CVE-2014-5195 (CCN-95199)

Assigned:

2014-07-27

Published:

2014-07-27

Updated:

2017-09-08

Summary:

Unity before 7.2.3 and 7.3.x before 7.3.1, as used in Ubuntu, does not properly take focus of the keyboard when switching to the lock screen, which allows physically proximate attackers to bypass the lock screen by (1) leveraging a machine that had text selected when locking or (2) resuming from a suspension.

CVSS v3 Severity:

4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
5.3 Medium (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N)
1.6 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-362

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2014-5195

Source: OSVDB
Type: UNKNOWN
109788

Source: CCN
Type: OSVDB ID: 109788
Ubuntu Unity Underlying Window Keyboard Focus Screenlock Bypass

Source: BID
Type: UNKNOWN
68987

Source: CCN
Type: BID-68987
Ubuntu 'Unity' Package Lock Screen Local Security Bypass Vulnerability

Source: UBUNTU
Type: UNKNOWN
USN-2303-1

Source: CCN
Type: Ubuntu Bug #1349128
Ubuntu 14.04 lock screen doesn't accept keyboard input and sends it back to the underlying window (until using indicators)

Source: CONFIRM
Type: UNKNOWN
https://bugs.launchpad.net/unity/7.2/+bug/1349128

Source: XF
Type: UNKNOWN
ubuntu-unity-screenlock-sec-bypass(95199)

Source: XF
Type: UNKNOWN
ubuntu-unity-screenlock-sec-bypass(95199)

Vulnerable Configuration:

Configuration 1:

cpe:/a:ayatana_project:unity:7.2.0:*:*:*:*:*:*:*

OR cpe:/a:ayatana_project:unity:7.2.1:*:*:*:*:*:*:*

OR cpe:/a:ayatana_project:unity:*:*:*:*:*:*:*:* (Version <= 7.2.2)

OR cpe:/a:ayatana_project:unity:7.3.0:*:*:*:*:*:*:*

AND

cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.precise:def:20145195000	V	CVE-2014-5195 on Ubuntu 12.04 LTS (precise) - medium.	2014-08-07
oval:com.ubuntu.trusty:def:20145195000	V	CVE-2014-5195 on Ubuntu 14.04 LTS (trusty) - medium.	2014-08-07

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