Authorization Bypass

2019-05-0204:54:03

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

6.2 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

JSON

kernel-rt is vulnerable to authorization bypass. A flaw was found in the way file permission checks for the /dev/cpu/[x]/msr files were performed in restricted root environments (for example, when using a capability-based security model). A local user with the ability to write to these files could use this flaw to escalate their privileges to kernel level, for example, by writing to the SYSENTER_EIP_MSR register.

CPENameOperatorVersion
kernel-rteq3.0.18__rt34.53.el6rt
kernel-rteq3.0.36__rt57.66.el6rt
kernel-rteq3.0.30__rt50.62.el6rt
kernel-rteq2.6.33.9__rt31.79.el6rt
kernel-rteq3.2.33__rt50.66.el6rt
kernel-rteq3.2.23__rt37.56.el6rt
kernel-rteq3.0.9__rt26.46.el6rt
kernel-rteq2.6.33.9__rt31.66.el6rt
kernel-rteq2.6.33.9__rt31.74.el6rt
kernel-rteq3.0.9__rt26.45.el6rt

Name	Operator	Version
kernel-rt	eq	3.0.18__rt34.53.el6rt
kernel-rt	eq	3.0.36__rt57.66.el6rt
kernel-rt	eq	3.0.30__rt50.62.el6rt
kernel-rt	eq	2.6.33.9__rt31.79.el6rt
kernel-rt	eq	3.2.33__rt50.66.el6rt
kernel-rt	eq	3.2.23__rt37.56.el6rt
kernel-rt	eq	3.0.9__rt26.46.el6rt
kernel-rt	eq	2.6.33.9__rt31.66.el6rt
kernel-rt	eq	2.6.33.9__rt31.74.el6rt
kernel-rt	eq	3.0.9__rt26.45.el6rt