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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1870 OpenSSL vulnerabilities patched in Ubuntu 27 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openssl Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-0737 CVE-2018-0732 CVE-2018-0495 CVE-2017-0737 Reference: ESB-2018.1231 ESB-2018.1173 Original Bulletin: http://www.ubuntu.com/usn/usn-3692-1 http://www.ubuntu.com/usn/usn-3692-2 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3692-1 June 26, 2018 openssl, openssl1.0 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS - - Ubuntu 17.10 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in OpenSSL. Software Description: - - openssl: Secure Socket Layer (SSL) cryptographic library and tools - - openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools Details: Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495) Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service. (CVE-2018-0732) Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. (CVE-2018-0737) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: libssl1.0.0 1.0.2n-1ubuntu5.1 libssl1.1 1.1.0g-2ubuntu4.1 Ubuntu 17.10: libssl1.0.0 1.0.2g-1ubuntu13.6 Ubuntu 16.04 LTS: libssl1.0.0 1.0.2g-1ubuntu4.13 Ubuntu 14.04 LTS: libssl1.0.0 1.0.1f-1ubuntu2.26 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3692-1 CVE-2018-0495, CVE-2018-0732, CVE-2018-0737 Package Information: https://launchpad.net/ubuntu/+source/openssl/1.1.0g-2ubuntu4.1 https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.1 https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu13.6 https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu4.13 https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.26 - -------------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3692-2 June 26, 2018 openssl vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 12.04 ESM Summary: Several security issues were fixed in OpenSSL. Software Description: - - openssl: Secure Socket Layer (SSL) cryptographic library and tools Details: USN-3692-1 fixed a vulnerability in OpenSSL. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495) Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service. (CVE-2018-0732) Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. (CVE-2018-0737) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: libssl1.0.0 1.0.1-4ubuntu5.43 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3692-2 https://usn.ubuntu.com/usn/usn-3692-1 CVE-2017-0737, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737 - --------------------------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 iQIVAwUBWzMLM2aOgq3Tt24GAQhjqxAAxa862z7rc/kifhomPm+VYhGptkal50jM KXGnXm5Wj6C6PuH4Qsc8j0aYlgdGS/gh0c2Y9gJVX9fGyKw2FkWzjw3QfqKTLK2b cYiSRCqddnAgYbjfoyksm2KNCvwhsdXHIS0DbT2RcqENtkYpP3I+/bBXBwfvRRf/ 4iqw8HLiBrS5b+azoYbAXy/l/GftwHgt0zEqgY/axkgoetk+o5S9DWEVkbCKm4tv fHeMhAAyY23nPeM81RSwaj9NZmWYvzDTerWAZEp48eWnoEB6LVrjcPO44W0vX70j 32l+6SYSv0XJ5tun9pfOog4BAwi98xibPL5S5Q8+593olBZfYABwaO9+Jnxif+f4 uBb4X6wqGoofmaT978orQDBsbVtbMotVR/GAgT34QH/ITQ9HcBm+0W+mP3VMtxcc OL12jEqRKADVlOOJJ+JOm29qz/BTXU1cEqMoupWU1F6HokOnxCfTUWC6TaJCvs5G Xf2Gd5eacqYev6/6nUZWMNXjc1rW2x82riesrLxQZlje5/S5xBNUs/9xBagGNshO DkJBztJte9PbIG6Kxi2YjdhaVh5n3AEOrqEuEgT6z38ZCRJF1rUmh/SL8xZX4s27 1aL5hPqfHDDi45+IjDZ+cqZAbo5wKoZpUb2gOd9O8MEJXAmNgESzOAd0v2YpiZX3 3dz2fZfPAsc= =vxLv -----END PGP SIGNATURE-----