CVE-2018-1063 - Improper Link Resolution Before File Access ('Link Following')

Severity

32%

Complexity

34%

Confidentiality

81%

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.

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.

CVSS 3.0 Base Score 4.4. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

CVSS 2.0 Base Score 3.3. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:N).

Overview

First reported 7 years ago

2018-03-02 15:29:00

Last updated 7 years ago

2018-04-12 01:29:00

Affected Software

Red Hat Enterprise Linux (RHEL) 7.0 (7)

7.0

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