Vulnerability Name:

CVE-2015-5281 (CCN-108206)

Assigned:2015-11-17
Published:2015-11-17
Updated:2016-12-07
Summary:The grub2 package before 2.02-0.29 in Red Hat Enterprise Linux (RHEL) 7, when used on UEFI systems, allows local users to bypass intended Secure Boot restrictions and execute non-verified code via a crafted (1) multiboot or (2) multiboot2 module in the configuration file or physically proximate attackers to bypass intended Secure Boot restrictions and execute non-verified code via the (3) boot menu.
CVSS v3 Severity:5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:2.6 Low (CVSS v2 Vector: AV:L/AC:H/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
2.6 Low (REDHAT CVSS v2 Vector: AV:L/AC:H/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-264
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2015-5281

Source: FEDORA
Type: UNKNOWN
FEDORA-2015-c3b4fef3af

Source: FEDORA
Type: UNKNOWN
FEDORA-2015-2c155d7632

Source: REDHAT
Type: Vendor Advisory
RHSA-2015:2401

Source: CCN
Type: IBM Security Bulletin T1023376 (PowerKVM)
Vulnerabilities in grub2 affect PowerKVM (CVE-2015-5281, CVE-2015-8370)

Source: CONFIRM
Type: UNKNOWN
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

Source: BID
Type: UNKNOWN
77983

Source: CCN
Type: BID-77983
GNU GRUB2 CVE-2015-5281 Local Security Bypass Vulnerability

Source: SECTRACK
Type: UNKNOWN
1034198

Source: CCN
Type: Red Hat Bugzilla – Bug 1264103
(CVE-2015-5281) CVE-2015-5281 grub2: modules built in on EFI builds that allow loading arbitrary code, circumventing secure boot

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=1264103

Source: XF
Type: UNKNOWN
grub2-cve20155281-code-exec(108206)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2015-5281

Vulnerable Configuration:Configuration 1:
  • cpe:/o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ibm:powerkvm:2.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerkvm:3.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:201552810000000
    V
    		CVE-2015-5281 on Ubuntu 16.04 LTS (xenial) - low.
    2015-11-24
    oval:com.ubuntu.precise:def:20155281000
    V
    		CVE-2015-5281 on Ubuntu 12.04 LTS (precise) - low.
    2015-11-24
    oval:com.ubuntu.trusty:def:20155281000
    V
    		CVE-2015-5281 on Ubuntu 14.04 LTS (trusty) - low.
    2015-11-24
    oval:com.ubuntu.xenial:def:20155281000
    V
    		CVE-2015-5281 on Ubuntu 16.04 LTS (xenial) - low.
    2015-11-24
    oval:com.redhat.rhsa:def:20152401
    P
    		RHSA-2015:2401: grub2 security, bug fix, and enhancement update (Low)
    2015-11-19
    BACK
    redhat enterprise linux 7.0
    ibm powerkvm 2.1
    ibm powerkvm 3.1