Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1767 Ruby vulnerabilities 15 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ruby Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Overwrite Arbitrary Files -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-1000074 CVE-2018-8777 CVE-2017-17742 CVE-2017-14064 CVE-2017-10784 CVE-2017-0903 CVE-2017-0902 CVE-2017-0901 CVE-2017-0898 Reference: ASB-2017.0137 ESB-2018.1259 ESB-2018.1258 ESB-2017.2520 ESB-2017.2347 ESB-2017.2224 Original Bulletin: http://www.ubuntu.com/usn/usn-3685-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3685-1 June 13, 2018 ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Ruby. Software Description: - - ruby2.3: Object-oriented scripting language - - ruby1.9.1: Object-oriented scripting language - - ruby2.0: Object-oriented scripting language Details: Some of these CVE were already addressed in previous USN: 3439-1, 3553-1, 3528-1. Here we address for the remain releases. It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to cause a buffer overrun. (CVE-2017-0898) It was discovered that Ruby incorrectly handled certain files. An attacker could use this to overwrite any file on the filesystem. (CVE-2017-0901) It was discovered that Ruby was vulnerable to a DNS hijacking vulnerability. An attacker could use this to possibly force the RubyGems client to download and install gems from a server that the attacker controls. (CVE-2017-0902) It was discovered that Ruby incorrectly handled certain YAML files. An attacker could use this to possibly execute arbitrary code. (CVE-2017-0903) It was discovered that Ruby incorrectly handled certain files. An attacker could use this to expose sensitive information. (CVE-2017-14064) It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to execute arbitrary code. (CVE-2017-10784) It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to inject a crafted key into a HTTP response. (CVE-2017-17742) It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. This update is only addressed to ruby2.0. (CVE-2018-1000074) It was discovered that Ruby incorrectly handled certain network requests. An attacker could possibly use this to cause a denial of service. (CVE-2018-8777) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: libruby2.3 2.3.3-1ubuntu1.6 ruby2.3 2.3.3-1ubuntu1.6 Ubuntu 16.04 LTS: libruby2.3 2.3.1-2~16.04.10 ruby2.3 2.3.1-2~16.04.10 Ubuntu 14.04 LTS: libruby1.9.1 1.9.3.484-2ubuntu1.12 libruby2.0 2.0.0.484-1ubuntu2.10 ruby1.9.1 1.9.3.484-2ubuntu1.12 ruby1.9.3 1.9.3.484-2ubuntu1.12 ruby2.0 2.0.0.484-1ubuntu2.10 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3685-1 CVE-2017-0898, CVE-2017-0901, CVE-2017-0902, CVE-2017-0903, CVE-2017-10784, CVE-2017-14064, CVE-2017-17742, CVE-2018-1000074, CVE-2018-8777 Package Information: https://launchpad.net/ubuntu/+source/ruby2.3/2.3.3-1ubuntu1.6 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.10 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.12 https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.10 - --------------------------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 iQIVAwUBWyMGPGaOgq3Tt24GAQho2w//W+DMcMiF9V5MOVwlz9mosf0Emg5FuLYZ c5+d5j/futlP5Su1I0NSjdGiOMhsZBDq8KkYQsRxnO4xjGNTBzvk/HHwoH8ZG9Q/ Dp8cyHf663Vmza7HqmtnNo5IhdLxzEdJe3CxM9pqGmNhp/BnIpiTpZxQ3qmwS3r2 4zoj3TphzhFYoOXOmyYNdLyMBDk6skyFk4EsueG/0MSHMzVTzhvJZ/WGR3Bd6qae NSWmhHfsvZVFKkOLzj8VC1azsMrE1oWdIOeyuk8jbHV3nx56SLAQHCyOaEhcwM3V ccFnD+BUeCQ6e4psMzoj3CZY72WR3MmRUULIjf13JlGFVS4hUu5aJ7T0Skr2v2je auWLhOTwnBqocS3lOp2i0D2bV1p4RVhtALzNiTsAiQo5AnI8i79Yf5HjnSuLCr2p Hkn1twGZhZNBeN3XkCZBB3tVsuSE5VJU0cqKkDaLnlFBIznp54GpUrQUf1+5kOBQ FtxOsbNHzkTcty1iljEe6Fy9tgm5600Ou1F/MqfZxxY75QKX8SYTiwmVIMC8qy8V QtTuUmISb3fbU/1KgXAh6+ybmWg427NP/LisQaO3lnUdb0VNGnrdgfzyECx1SELt Pj1xe2OhYr+RS1hPYzu0dHonTLwHD/WtFwY1GvgwTztF6O6R41RDKTSkwNdMedE4 p6oxNrw17uY= =wZCY -----END PGP SIGNATURE-----