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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0093 2019-01 Security Bulletin: Junos OS: vMX series: Predictable IP ID sequence numbers vulnerability (CVE-2019-0007) 10 January 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Juniper vMX Series Publisher: Juniper Networks Operating System: Juniper Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-0007 Original Bulletin: https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10903 - --------------------------BEGIN INCLUDED TEXT-------------------- 2019-01 Security Bulletin: Junos OS: vMX series: Predictable IP ID sequence numbers vulnerability (CVE-2019-0007) [JSA10903] Product Affected: This issue affects Junos OS 15.1. Affected platforms: vMX Series. Problem: The vMX Series software uses a predictable IP ID Sequence Number. This leaves the system as well as clients connecting through the device susceptible to a family of attacks which rely on the use of predictable IP ID sequence numbers as their base method of attack. This issue was found during internal product security testing. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F5 on vMX Series. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was found during internal product security testing or research. This issue has been assigned CVE-2019-0007. Solution: The following software releases have been updated to resolve this specific issue: 15.1F5, and all subsequent releases. This issue is being tracked as PR 1140895 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: When used in whole, the following workaround methods may reduce the risk of information exfiltration from the customer environment, and reduce the chance of being subjected to, or propagating D/DoS attacks against other targets. Deny incoming packets with invalid source addresses From reaching the device. Utilize egress filtering to prevent invalid / spoofed packets from leaving your network(s). Enable stateful firewall filters where possible. Utilize SYN-based anti-flood protection mechanisms where possible to reduce or avoid D/DoS attacks. Implementation: Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/. Modification History: 2019-01-09: Initial Publication. Related Links: KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process KB16765: In which releases are vulnerabilities fixed? KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team CVE-2019-0007 at cve.mitre.org CVSS Score: 9.3 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H) Risk Level: Critical 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." - --------------------------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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