Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2019.0678
Multiple vulnerabilities in RubyGems
5 March 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: RubyGems
Publisher: Ruby
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Delete Arbitrary Files -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-8325 CVE-2019-8324 CVE-2019-8323
CVE-2019-8322 CVE-2019-8321 CVE-2019-8320
Original Bulletin:
https://www.ruby-lang.org/en/news/2019/03/05/multiple-vulnerabilities-in-rubygems/
- --------------------------BEGIN INCLUDED TEXT--------------------
Multiple vulnerabilities in RubyGems
Posted by hsbt on 5 Mar 2019
There are multiple vulnerabilities in RubyGems bundled by Ruby. It is reported
at the official blog of RubyGems .
Details
The following vulnerabilities have been reported.
o CVE-2019-8320: Delete directory using symlink when decompressing tar
o CVE-2019-8321: Escape sequence injection vulnerability in verbose
o CVE-2019-8322: Escape sequence injection vulnerability in gem owner
o CVE-2019-8323: Escape sequence injection vulnerability in API response
handling
o CVE-2019-8324: Installing a malicious gem may lead to arbitrary code
execution
o CVE-2019-8325: Escape sequence injection vulnerability in errors
It is strongly recommended for Ruby users to take one of the following
workarounds as soon as possible.
Affected Versions
o Ruby 2.4 series: 2.4.5 and earlier
o Ruby 2.5 series: 2.5.3 and earlier
o Ruby 2.6 series: 2.6.1 and earlier
o prior to trunk revision XXXXXX
Workarounds
RubyGems 2.7.6/3.0.3 or later includes the fix for the vulnerabilities, so
upgrade RubyGems to the latest version.
gem update --system
If you can t upgrade RubyGems, you can apply the following patches as a
workaround.
o for Ruby 2.4.5
o for Ruby 2.5.3
o for Ruby 2.6.1
About the trunk, update to the latest revision.
Credits
This report is based on the official blog of RubyGems .
History
o Originally published at 2019-03-05 00:00:00 UTC
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=gQjo
-----END PGP SIGNATURE-----