Bug 1730312 (CVE-2019-13228) - CVE-2019-13228 deepin-clone: fixed path in the BootDoctor::fix() function allows symlink attack
Summary: CVE-2019-13228 deepin-clone: fixed path in the BootDoctor::fix() function all...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-13228
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: 1730314
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-07-16 12:30 UTC by Marian Rehak
Modified: 2021-02-16 21:42 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2019-07-16 14:40:51 UTC
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Description Marian Rehak 2019-07-16 12:30:34 UTC 
deepin-clone before 1.1.3 uses a fixed path /tmp/repo.iso in the BootDoctor::fix() function to download an ISO file, and follows symlinks there. An unprivileged user can prepare a symlink attack there to create or overwrite files. The content is not attacker controlled. By winning a race condition to replace the /tmp/repo.iso symlink by an attacker controlled ISO file, further privilege escalation may be possible.

External References:

https://bugzilla.suse.com/show_bug.cgi?id=1130388
Comment 1 Marian Rehak 2019-07-16 12:31:50 UTC 
Created deepin-clone tracking bugs for this issue:

Affects: fedora-30 [bug 1730314]
Comment 2 Product Security DevOps Team 2019-07-16 14:40:51 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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