Ticket #1782 (closed defect: fixed)

Opened 15 months ago

Last modified 15 months ago

TOCTOU race conditions by copying and removing directory trees

Reported by: jhrozek Owned by: jhrozek
Priority: critical Milestone: SSSD 1.9.4
Component: SSSD Version: 1.9.3
Keywords: Cc:
Blocked By: Blocking:
Tests Updated: no Coverity Bug:
Patch Submitted: yes Red Hat Bugzilla: 884254
Design link:
Feature Milestone:
Design review: no Fedora test page:
Chosen: Candidate to push out:
Release Notes:


A TOCTOU (time-of-check time-of-use) race condition was found in the way SSSD, System Security Services Daemon, performed copying and removal of (user) directory trees.A local attacker, with permissions to write into directory of the victim, being actively / currently copied / removed via the sssd daemon facility, could use this flaw to conduct symbolic link attacks, leading to their ability to alter / remove directories outside of originally intended, to be modified, directory tree.

This issue was found by Florian Weimer of Red Hat Product Security Team.

Change History

comment:1 Changed 15 months ago by jhrozek

  • Status changed from new to assigned
  • Red Hat Bugzilla set to 884254
  • Owner changed from somebody to jhrozek

comment:2 Changed 15 months ago by jhrozek

  • Patch Submitted set
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