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-----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). 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