CVE-2015-7837

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798	Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1272472	Issue Tracking Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/10/15/6	Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2411.html	Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-2152.html	Vendor Advisory
http://www.securityfocus.com/bid/77097	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:redhat:kernel-rt:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.2:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.3:::::::*
	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:::::::*
	cpe:2.3:o:redhat:enterprise_mrg:2.0:::::::*

Information

Published : 2017-09-19 09:29

Updated : 2021-07-15 12:16

NVD link : CVE-2015-7837

Mitre link : CVE-2015-7837

JSON object : View

CWE

CWE-254

7PK - Security Features

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Products Affected

redhat

enterprise_linux_desktop
enterprise_mrg
kernel-rt
enterprise_linux_server_aus
enterprise_linux
enterprise_linux_workstation

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