Vulnerability Name:

CCN-166612

Published:2019-04-02
Updated:2019-04-02
Summary:ChromeOS could allow a local attacker to bypass security restrictions, caused by a logic flaw in the SafeSetID function in LSM. By switching to an allowed UID and then again to any other UID on the system, an attacker could exploit this vulnerability to bypass the security restrictions.
CVSS v3 Severity:6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
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): High
Availibility (A): None
CVSS v2 Severity:4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Consequences:Bypass Security
References:Source: CCN
Type: Google Security Research Issue 1814
ChromeOS: multiple issues in SafeSetID LSM

Source: XF
Type: UNKNOWN
chromeos-safesetidlsm-sec-bypass(166612)

Source: CCN
Type: Linux kernel source tree
index : kernel/git/torvalds/linux.git

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:google:chrome_os:*:*:*:*:*:*:*:*
  • AND
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    google chrome os *
    linux linux kernel *