Bug 1854723 (CVE-2020-14019) - CVE-2020-14019 python-rtslib: weak permissions for /etc/target/saveconfig.json
Summary: CVE-2020-14019 python-rtslib: weak permissions for /etc/target/saveconfig.json
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-14019
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1854724 1855171 1857797 1876812 1876813
Blocks: 1854725
TreeView+ depends on / blocked
 
Reported: 2020-07-08 06:09 UTC by Dhananjay Arunesh
Modified: 2021-02-16 19:42 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Open-iSCSI rtslib-fb through versions 2.1.72, where it has weak permissions for /etc/target/saveconfig.json because the shutil.copyfile, instead of shutil.copy is used, and permissions are not preserved upon editing. This flaw allows an attacker with prior access to /etc/target/saveconfig.json to access a later version, resulting in a loss of integrity, depending on their permission settings. The highest threat from this vulnerability is to confidentiality.
Clone Of:
Environment:
Last Closed: 2020-12-15 22:18:36 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:5435 0 None None None 2020-12-15 11:10:55 UTC

Description Dhananjay Arunesh 2020-07-08 06:09:17 UTC 
Open-iSCSI rtslib-fb through 2.1.72 has weak permissions for /etc/target/saveconfig.json because shutil.copyfile (instead of shutil.copy) is used, and thus permissions are not preserved.

References:
https://github.com/open-iscsi/rtslib-fb/pull/162
Comment 1 Dhananjay Arunesh 2020-07-08 06:09:58 UTC 
Created python-rtslib tracking bugs for this issue:

Affects: fedora-all [bug 1854724]
Comment 3 Stefan Cornelius 2020-07-10 16:22:06 UTC 
Patch (also fixes a related issue with file open modes):
https://github.com/open-iscsi/rtslib-fb/commit/1d19b0f2aa45b8f61f75d6a05524389ea547784c
Comment 8 Sage McTaggart 2020-07-16 17:23:22 UTC 
Statement:

Red Hat Ceph Storage 2 and 3 are not affected because within the affected method, shutil.copyfile is not used. However, the affected method, save_to_file is outdated and contains a race condition. Hence, this issue has been rated as having a security impact of low.
Comment 16 errata-xmlrpc 2020-12-15 11:10:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5435 https://access.redhat.com/errata/RHSA-2020:5435
Comment 17 Product Security DevOps Team 2020-12-15 22:18:36 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-14019
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