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Bug 2097651 - grub2-set-bootflag is a setuid binary which changes system configuration
Summary: grub2-set-bootflag is a setuid binary which changes system configuration
Keywords:
Status: CLOSED MIGRATED
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: audit
Version: 9.0
Hardware: Unspecified
OS: Unspecified
medium
unspecified
Target Milestone: rc
: ---
Assignee: Sergio Correia
QA Contact: BaseOS QE Security Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-06-16 08:47 UTC by Jan Pazdziora (Red Hat)
Modified: 2023-09-19 17:34 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-09-19 17:34:10 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker   RHEL-5189 0 None Migrated None 2023-09-19 17:34:07 UTC
Red Hat Issue Tracker RHELPLAN-125436 0 None None None 2022-06-16 08:50:18 UTC
Red Hat Issue Tracker SECENGSP-4642 0 None None None 2022-06-16 08:50:20 UTC

Description Jan Pazdziora (Red Hat) 2022-06-16 08:47:00 UTC 
Description of problem:

The /usr/share/audit/sample-rules/30-ospp-v42.rules file has section

## Use of special rights for config changes. This would be use of setuid
## programs that relate to user accts. This is not all setuid apps because
## requirements are only for ones that affect system configuration.

A binary which meets this criteria but is not listed is /usr/sbin/grub2-set-bootflag.

Version-Release number of selected component (if applicable):

audit-3.0.7-101.el9_0.2.x86_64

How reproducible:

Deterministic.

Steps to Reproduce:
1. cp /usr/share/audit/sample-rules/30-ospp-v42.rules /etc/audit/rules.d/
2. augenrules --load
3. As unprivileged user, run grub2-set-bootflag boot_success
4. grep grub2-set-bootflag /var/log/audit/audit.log

Actual results:

No record found.

Expected results:

type=SYSCALL msg=audit(1655369136.284:296): arch=c000003e syscall=59 success=yes exit=0 a0=5588b7677f90 a1=5588b7684400 a2=5588b7691b60 a3=8 items=2 ppid=15172 pid=15349 auid=1000 uid=1000 gid=1000 euid=0 suid=0 fsuid=0 egid=1000 sgid=1000 fsgid=1000 tty=pts1 ses=3 comm="grub2-set-bootf" exe="/usr/sbin/grub2-set-bootflag" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key="special-config-changes"ARCH=x86_64 SYSCALL=execve AUID="test" UID="test" GID="test" EUID="root" SUID="root" FSUID="root" EGID="test" SGID="test" FSGID="test"
type=EXECVE msg=audit(1655369136.284:296): argc=2 a0="grub2-set-bootflag" a1="boot_success"
type=PATH msg=audit(1655369136.284:296): item=0 name="/usr/sbin/grub2-set-bootflag" inode=67490455 dev=fd:00 mode=0104755 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:bootloader_exec_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0OUID="root" OGID="root"

Additional info:
Comment 1 Steve Grubb 2022-06-16 16:27:36 UTC 
This is upstream commit fe15227.
Comment 3 RHEL Program Management 2023-09-19 17:32:23 UTC 
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 4 RHEL Program Management 2023-09-19 17:34:10 UTC 
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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