Bug 1263195 - grub2: Built-in multiboot modules functioning on UEFI allow user to load non-verified code
Summary: grub2: Built-in multiboot modules functioning on UEFI allow user to load non-...
Keywords:
Status: CLOSED DUPLICATE of bug 1264103
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1262904 CVE-2015-5281
Blocks: 1263198
TreeView+ depends on / blocked
 
Reported: 2015-09-15 09:58 UTC by Adam Mariš
Modified: 2019-09-29 13:36 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-17 09:11:26 UTC


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Description Adam Mariš 2015-09-15 09:58:23 UTC
A vulnerability in grub2 allowing users to load non-verified code, such as tools to circumvent Secure Boot was reported. The problem raised from introducing this commit:

http://pkgs.devel.redhat.com/cgit/rpms/grub2/commit/?h=rhel-7.2&id=909ac684df7a662e7afd9d45d546ad97d363d197

Multiboot a multiboot2 modules remained built-in, that should not function on UEFI systems, but there is a prevention missing. Non-verified code can be loaded from boot menu if there's no password set, or in the config file if gained root privileges.

For reproducing the issue, see Bug #1262904.

Comment 2 Stefan Cornelius 2015-11-17 09:11:26 UTC

*** This bug has been marked as a duplicate of bug 1264103 ***


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