CVE-2015-7837

MEDIUM5.5

The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot

Published Sep 19, 2017

Modified 1 years ago

Details

The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot.

References

ADVISORYhttp://rhn.redhat.com/errata/RHSA-2015-2152.html ADVISORYhttp://rhn.redhat.com/errata/RHSA-2015-2411.html WEBhttp://www.openwall.com/lists/oss-security/2015/10/15/6 WEBhttp://www.securityfocus.com/bid/77097 WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=1272472 WEBhttps://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2015-7837

CVSS Analysis

CVSS v3.0

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

HighI:H

Availability

NoneA:N

5.5/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Ecosystems

Timeline

PublishedSep 19, 2017

ModifiedAug 6, 2024