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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3467 Ruby vulnerabilities 6 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Ruby Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-16396 CVE-2018-16395 Reference: ESB-2018.3444 Original Bulletin: http://www.ubuntu.com/usn/usn-3808-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3808-1 November 05, 2018 ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.10 - - Ubuntu 18.04 LTS - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Ruby. Software Description: - - ruby2.5: Interpreter of object-oriented scripting language Ruby - - ruby2.3: Object-oriented scripting language - - ruby1.9.1: Object-oriented scripting language - - ruby2.0: Object-oriented scripting language Details: It was discovered that Ruby incorrectly handled certain X.509 certificates. An attacker could possibly use this issue to bypass the certificate check. (CVE-2018-16395) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-16396) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: libruby2.5 2.5.1-5ubuntu4.1 ruby2.5 2.5.1-5ubuntu4.1 Ubuntu 18.04 LTS: libruby2.5 2.5.1-1ubuntu1.1 ruby2.5 2.5.1-1ubuntu1.1 Ubuntu 16.04 LTS: libruby2.3 2.3.1-2~16.04.11 ruby2.3 2.3.1-2~16.04.11 Ubuntu 14.04 LTS: libruby1.9.1 1.9.3.484-2ubuntu1.13 libruby2.0 2.0.0.484-1ubuntu2.11 ruby1.9.1 1.9.3.484-2ubuntu1.13 ruby1.9.3 1.9.3.484-2ubuntu1.13 ruby2.0 2.0.0.484-1ubuntu2.11 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3808-1 CVE-2018-16395, CVE-2018-16396 Package Information: https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-5ubuntu4.1 https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-1ubuntu1.1 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.11 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.13 https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.11 - --------------------------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 iQIVAwUBW+DqY2aOgq3Tt24GAQiYxA/9EQNP5hw9miVhU71DuX+GYA/iQdhgChAL CFzm60lwWmW/ze4yuFDsKqREo3+B1Yb6sP0HHsMKVeldVdJXKs2gutwW8wlqFl8M 8/JbCkcr46CK8XhTmIatveHLeFKxHljVY82OaNUM/y02B4KDMvHdUExtZSAfy3BE Pd7rPVNu3MWPUeaJNJRKFHbzOG4FZHtwslsNgcybSEm3bQhKl919jng5D4OKlXhd 9xw9ZrYsnP0Etn4N+3nAVo12R8SZ9Aj6DrhFsWTvGQaM/87pPxg/h9WJ4LHhSf0v 1kooqXL8Az/IgDM87HBm6YjYPPtlrzsoEGR9Da4joGegN4jnycmrvYcikH2tJ958 +nCbAHwotIPxKsig3knZ78CWZFdxI4mH0eek4AVyRIZkBQoTSVJFDvn0Zbi4GRi3 eJAfa2yOeVv9mKl0GxYjo8OQfVeMhhfkmlTPsqz4NItBo+Sa0na4jq9cwIHyx2Cd LovWF9pxnVS5dOMdlEkwj0zCxSh/G8es4kACyBkvawSC4wlfDvMSdRSLjYYqFqRV V+ukiNWI7eHQu5sqSZqgaCWFnThrPimL9J3zaxMc/DfOmsoQ6IvPCAwbQM4R9ajB 4/dAN3UfxvRJwBREAh5Ndxffoq7oXVrZpUh2boVCeo8wEPhepAyLvamm+wtns1Xz OIrrzs42gqI= =SB3k -----END PGP SIGNATURE-----