National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-1063 Detail

Current Description

Context relabeling of filesystems is vulnerable to symbolic link attack, allowing a local, unprivileged malicious entity to change the SELinux context of an arbitrary file to a context with few restrictions. This only happens when the relabeling process is done, usually when taking SELinux state from disabled to enable (permissive or enforcing). The issue was found in policycoreutils 2.5-11.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.4 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N (V3 legend)
Impact Score: 2.5
Exploitability Score: 1.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 3.3 LOW
Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 3.4


Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://access.redhat.com/errata/RHSA-2018:0913
https://bugzilla.redhat.com/show_bug.cgi?id=1550122 Issue Tracking Mitigation Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:a:selinux_project:selinux:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-1063
NVD Published Date:
03/02/2018
NVD Last Modified:
04/11/2018