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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1125 NorthStar: Return Of Bleichenbacher's Oracle Threat (ROBOT) RSA SSL attack (CVE-2017-1000385) 12 April 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Northstar Controller Publisher: Juniper Networks Operating System: Juniper Impact/Access: Access Privileged Data -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-1000385 Reference: ESB-2018.0575 ESB-2018.0465 Original Bulletin: https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10850 - --------------------------BEGIN INCLUDED TEXT-------------------- 2018-04 Security Bulletin: NorthStar: Return Of Bleichenbacher's Oracle Threat (ROBOT) RSA SSL attack (CVE-2017-1000385) CVSS Score: 5.9 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N) Risk Level: Medium Risk Assessment: Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories." Product Affected: This issue affects NorthStar Controller 3.0, 3.2. Problem: On December 12, 2017, a research paper entitled, "Return of Bleichenbacher's Oracle Threat" (ROBOT) was published. Researchers discovered that by using slight variations of an earlier vulnerability discovered by Daniel Bleichenbacher that allows performing RSA decryption and signing operations with the private key of a TLS server, some current implementations of SSL may still be vulnerable. Internal analysis found that NorthStar uses a version of the Erlang programming language which is known to be vulnerable to ROBOT. Affected releases are Juniper Networks NorthStar Controller: 3.0 versions prior to 3.0.1; 3.2 versions prior to 3.2.1. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was discovered during an external security research. This issue has been assigned CVE-2017-1000385. Solution: Erlang has been updated to version 18.3.4.7 which resolves this issue. The following software releases have been updated to resolve this vulnerability: NorthStar 3.0.1, 3.2.1, 4.0.0, and all subsequent releases. This issue is being tracked as 1329222 which is visible on the Customer Support website. Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL). Workaround: Disable use of TLS ciphers that rely on RSA for key exchange. Implementation: Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/. Modification History: 2018-04-11: Initial Publication - --------------------------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). 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