Vulnerability Name:

CVE-2018-8885 (CCN-141051)

Assigned:2018-03-26
Published:2018-03-26
Updated:2018-04-27
Summary:screenresolution-mechanism in screen-resolution-extra 0.17.2 does not properly use the PolicyKit D-Bus API, which allows local users to bypass intended access restrictions by leveraging a race condition via a setuid or pkexec process that is mishandled in a PolicyKitService._check_permission call.
CVSS v3 Severity:7.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
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-2018-8885

Source: XF
Type: UNKNOWN
ubuntu-cve20188885-sec-bypass(141051)

Source: CCN
Type: ubuntu security notice USN-3607-1
Screen Resolution Extra vulnerability

Source: UBUNTU
Type: Vendor Advisory
USN-3607-1

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-8885

Vulnerable Configuration:Configuration 1:
  • cpe:/a:canonical:screen-resolution-extra:0.17.2:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.artful:def:20188885000
    V
    		CVE-2018-8885 on Ubuntu 17.10 (artful) - medium.
    2018-03-28
    oval:com.ubuntu.trusty:def:20188885000
    V
    		CVE-2018-8885 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-03-28
    oval:com.ubuntu.xenial:def:20188885000
    V
    		CVE-2018-8885 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-03-28
    oval:com.ubuntu.xenial:def:201888850000000
    V
    		CVE-2018-8885 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-03-28
    BACK
    canonical screen-resolution-extra 0.17.2
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04
    canonical ubuntu linux 17.10