CVE-2015-7837

Severity

21%

Complexity

39%

Confidentiality

48%

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.

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 3.0 Base Score 5.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:P/A:N).

Overview

First reported 7 years ago

2017-09-19 16:29:00

Last updated 7 years ago

2017-10-05 14:43:00

Affected Software

RedHat Enterprise MRG 2.0

2.0

Red Hat Enterprise Linux (RHEL) 7.0 (7)

7.0

Red Hat Enterprise Linux 7.2

7.2

Red Hat Enterprise Linux 7.3

7.3

RedHat Enterprise Linux Desktop 7.0

7.0

Red Hat Enterprise Linux Advanced mission critical Update Support (AUS) 7.3

7.3

Red Hat Enterprise Linux Server Advanced mission critical Update Support (AUS) 7.4

7.4

RedHat Enterprise Linux Workstation 7.0

7.0

References

RHSA-2015:2152

Vendor Advisory

RHSA-2015:2411

Vendor Advisory

[oss-security] 20151015 Re: CVE Request - Linux kernel - securelevel/secureboot bypass.

Mailing List, Third Party Advisory

77097

Third Party Advisory, VDB Entry

https://bugzilla.redhat.com/show_bug.cgi?id=1272472

Issue Tracking, Vendor Advisory

https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798

Issue Tracking, Third Party Advisory

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