12 October 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2557 rubygems -- deserialization vulnerability 12 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rubygems Publisher: FreeBSD Operating System: FreeBSD UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-0903 Original Bulletin: http://www.vuxml.org/freebsd/2c8bd00d-ada2-11e7-82af-8dbff7d75206.html Comment: This advisory references vulnerabilities in products which run on platforms other than FreeBSD. It is recommended that administrators running rubygems check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- rubygems -- deserialization vulnerability Affected packages ruby22-gems < 2.6.14 ruby23-gems < 2.6.14 ruby24-gems < 2.6.14 Details VuXML ID 2c8bd00d-ada2-11e7-82af-8dbff7d75206 Discovery 2017-10-09 Entry 2017-10-10 oss-security mailing list: There is a possible unsafe object desrialization vulnerability in RubyGems. It is possible for YAML deserialization of gem specifications to bypass class white lists. Specially crafted serialized objects can possibly be used to escalate to remote code execution. References CVE Name CVE-2017-0903 URL http://blog.rubygems.org/2017/10/09/2.6.14-released.html URL http://www.openwall.com/lists/oss-security/2017/10/10/2 - --------------------------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 firstname.lastname@example.org 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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: email@example.com 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 iQIVAwUBWd6tRIx+lLeg9Ub1AQikBg/8CRaTfkKYpQSjkFqE2T38fhWDFkqCYMwS HJDPi2LkIbBc6jg0OoiIKEBzzcFolA79Qv+Fn2k+7KpD8aVXdM0t7Yncedye2QcY JqCqv3dspqt4s4TV2Cvvs/JnxbPKYTsMvcQxutENQca8wcuYYriZaXXYjI3Ttvfz rnrybNjbxxQpeKNpm6CrdxRmJDoPfHf6VxYF1f2yPenXKO+UmFtGu6yncvTsmA4T J7MMY5eVa28sL30ZivKDPHsh2AOStJynF3/W0e7LBY4m6T/lUiHOHL8oa0pUSRKb 5tCOjwSx2h2FxHnMD16Rfxwp2YWBh/w3YtuQQAVed47uT/hnKJG0JPJBKHuxLUIq WPdNvIWU6El9yfYT1hycQ6EYSBv9Lv/iT+TrmNUIiDOIsQDl2i5MPNMK0MPN/yLe j1eAWRVu5J9u5frNmsIFShv/ZRKVnMfcL0Zvz3eIM8jhIlTvJ7PCzW+nwPkocou1 Bdr2dt1h2cyGX6izAXsbAipq0xWjCH6L7eJKe0k4r2/MGq0nuNk3Z7oiwZDXnqE6 mrVGuWqMBaUj3+rboJJQ+0qH3jLpDcCTFDBUEGglsqkwgMPe1mngV7HGzcfHjMZo NKi8kXWPoW90+3sN5kTb0aRO4dk044EG2s8rCTQvvyUTUeBA2uw0Q/3uo8rxcPgA /VtsWZYweHk= =MEWT -----END PGP SIGNATURE-----