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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2869 ruby2.3 security update 13 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ruby2.3 Publisher: Debian Operating System: Debian GNU/Linux 9 Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-14033 CVE-2017-10784 CVE-2017-0903 CVE-2017-0898 Reference: ESB-2017.2557 ESB-2017.2520 ESB-2017.2347 Original Bulletin: http://www.debian.org/security/2017/dsa-4031 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4031-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso November 11, 2017 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : ruby2.3 CVE ID : CVE-2017-0898 CVE-2017-0903 CVE-2017-10784 CVE-2017-14033 Debian Bug : 875928 875931 875936 879231 Several vulnerabilities have been discovered in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2017-0898 aerodudrizzt reported a buffer underrun vulnerability in the sprintf method of the Kernel module resulting in heap memory corruption or information disclosure from the heap. CVE-2017-0903 Max Justicz reported that RubyGems is prone to an unsafe object deserialization vulnerability. When parsed by an application which processes gems, a specially crafted YAML formatted gem specification can lead to remote code execution. CVE-2017-10784 Yusuke Endoh discovered an escape sequence injection vulnerability in the Basic authentication of WEBrick. An attacker can take advantage of this flaw to inject malicious escape sequences to the WEBrick log and potentially execute control characters on the victim's terminal emulator when reading logs. CVE-2017-14033 asac reported a buffer underrun vulnerability in the OpenSSL extension. A remote attacker can take advantage of this flaw to cause the Ruby interpreter to crash leading to a denial of service. For the stable distribution (stretch), these problems have been fixed in version 2.3.3-1+deb9u2. We recommend that you upgrade your ruby2.3 packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAloHDDxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0QeVxAAmgX73N/qK9JzF4UGZS0P5ZjGs55ZvxrKjlhhnj5FqmHU2mkVo3se+yEO evdVAxaPD8t82fhZKcysav1yixCvoKSfridq5ZDDbsFahFi5UZC1cmHF5rkGdWru rG+jrxbFFZz0r32oSeMJVPu4dSHFyG7ToDloTzME/iubJZN3kyR6cKSm6MbKD6X2 yNlNoMKK/riTF1n9ZnLJ7GSY9vi4vyn0OZa4IyuRdIxsY9BEdBIJrWPNgBuOqwwf jtxn+BROE2b3EZi9t6zEXRiuLauDe5FRCXgNeNWpsAMbPakkRmIU5Ru3cncuPYIh puEGq4pQds/EX+/dGlw5IAY7EFDXVz4gA+8TrajUR2nwkAqXTeWkJ52JALb23MTX r7UU4LBMJRyq4pX3tH2xrncta4Hohty/vj9T+g9G+KCzLGN0HKHWDjl01SJRNahX /7CDCx0WAtxruwPu/2wM2S85giwM00RnD2LDcmjs/W18zbnGj0e9oxbboVQHC8VW UqqdbDNaiVAqma3j/vHPuGdgpNXGeOo0DkvWwKunl21EhJxis8czbppgycpRi5vP sKoNazt3alumZHWYO2FmOcZJs/BAq6+dfVUfON34S20i8KOA6Zu1DYmQZelTJg1E THqiQoPnU5obhJOviI7Dwrpiuy9irNYg2EP33pJQLszJKcqTLXo= =86GG - -----END PGP SIGNATURE----- - --------------------------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 iQIVAwUBWgjvsox+lLeg9Ub1AQhL4BAAgx9TDqdgvhQyi9k98AHICRUI/MgBjSy8 esyX6MEHMbWPpNSTiPJb18AJj058rt1TG39GyWneu40urGe72Lrv1HOkXv84DdOi fgaBVB7ZkIGykzzRWR3wmEavN1uBDyNhwYVRNMVGd1c8RSpS8dZ1J6UDj4GCiTBO cR01TME0wp4gVsl1l0XPjGsbQfv7XZxjFNXdTCM54yqJUrlOoZoF3LzOjxK3jkv8 KQ+LaPnbkbT2DK2wIr7ybgH8L8yQot/jBJG2DoGwWuxjItjrP4KxcY8dpLsGHR2r dQvlDu17kFxppoCvTWuYBcQK4KXzDcewJrzHDV7K6AqXNBy3krUKU1mc6e2iK8Vx yMuFqfS6u/ckhkMKA4hjBkji/XwkZloNKaDo+nTo932v/vKS0h5aQl/S0HAh+RAu vk6mrVBDGhF/LVgVoxX2Aaib34jqUR1/bDqh0zUNjhI/3aXT1sjxkhX2oyk+J5zx fjDVuY1pTpuH3ZqfCv12aixgx7AawcyEa14DvjxMi01w3uEeLo0eNlOib7HJ4cyi 8+AZAGrD70Vq/H7qzghY1ExDecIirjTdc0XyYGEYjVXPeJg7sb4/Bfq6taM0Urrc 37vOryWnk0N6aWC4E92GsR5ufpdvztouxfbxM+kkj7gdTFsnVYPgmsu9LsraodsS nG2ugf1jLTM= =Q1pZ -----END PGP SIGNATURE-----