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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2345 unos OS: MX Series: Services card might restart when DNS filtering is enabled (CVE-2020-1645) 9 July 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Junos OS Publisher: Juniper Networks Operating System: Juniper Impact/Access: Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-1645 Original Bulletin: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11028 - --------------------------BEGIN INCLUDED TEXT-------------------- 2020-07 Security Bulletin: Junos OS: MX Series: Services card might restart when DNS filtering is enabled (CVE-2020-1645) Article ID : JSA11028 Last Updated: 08 Jul 2020 Version : 1.0 Product Affected: This issue affects Junos OS 17.3, 18.3, 18.4, 19.1, 19.2, 19.3, 19.4. Affected platforms: MX Series. Problem: When DNS filtering is enabled on Juniper Networks Junos MX Series with one of the following cards MS-PIC, MS-MIC or MS-MPC, an incoming stream of packets processed by the Multiservices PIC Management Daemon (mspmand) process, responsible for managing "URL Filtering service", may crash, causing the Services PIC to restart. While the Services PIC is restarting, all PIC services including DNS filtering service (DNS sink holing) will be bypassed until the Services PIC completes its boot process. If the issue occurs, system core-dumps output will show a crash of mspmand process: root@device> show system core-dumps - -rw-rw---- 1 nobody wheel 575685123 <Date> /var/tmp/pics/mspmand.core.<*>.gz This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S8; 18.3 versions prior to 18.3R2-S4, 18.3R3-S1; 18.4 versions prior to 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S3, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.3R2. The example of the configuration stanza affected by this issue is as follows: [services service-set <SERVICE-SET-NAME>] user@host# set web-filter-profile <PROFILE_NAME> used in combination with: [services web-filter profile <PROFILE_NAME>] user@host# set dns-filter-template <TEMPLATE_NAME> Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was seen during production usage. This issue has been assigned CVE-2020-1645 . Solution: The following software releases have been updated to resolve this specific issue: 18.3R2-S4, 18.3R3-S1, 18.4R2-S5, 18.4R3, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S3, 19.3R3, 19.4R1-S3, 19.4R2, 20.1R1, and all subsequent releases. This issue is being tracked as 1474056 . Workaround: There are no viable workarounds for this issue. Implementation: Software release Service Packages are available at http://support.juniper.net from the "Download Software" links. Modification History: 2020-07-08: Initial Publication. CVSS Score: 8.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L) Severity Level: High Severity 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. 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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 iQIVAwUBXwaXUONLKJtyKPYoAQi6Mg/9EMUJjDfsk4IMzePFN2CVdxE5iVDSJOIG f1sQSDgv4eW7WESFsusfs01oaACayEioCOHMhIhXHMJBjcXLbsSYcXU0gRfqOiM4 QSoYulndgzv4Ik9of/ES5zBbZJq3Z0Nwgl/+VZYQuyNoJWDZhhVqPeqM474bY7EJ lJDTMAyg2LFNONhy/xjCFZDWmpmRMyIZmqNNkrWJ3/jdnOTp4KvlLzSdpltrmqVe v3iI7C3/26JSskOTyba0d5bctC4CVkblXQ/sJfgGz9q7C26Wxr3bLBFw/NRfXaZb tsoiCxDj/2ZHHSFRuDm2+X97W3jcV0CamctrRmUFDcV35IsTXNJ4rj3bEHlLZ4An VughltubnQdV24XK7jW1OAeZTgsgmwWY2kH4pVZLmWGfk9jE1skTthQ5z23VoKg0 YCyRatpK1g5j4UfK41/hx+l/ylveTNqCWryCeP+f3OVD2ihPTZRO75xD1fglpHlD d7EbxqblUeW3lhOgIkaV0ondVu/tmRkLNGnZ5HOiT7wNvszRTuZGXQ5kXU2rVUaS Kzyxelop0SSr5j1qoW6UIGmOO+R/TctvGS5QwA4t1sRF2GdSacY6G6YtB0oOFfSr xvnkxlcT8qc/vhAfatAGNSvZgtoYxRQ6XWONUkaRQya9QNl1MRDm5R3LutqDoL37 wG9FZYCJFp8= =1MJt -----END PGP SIGNATURE-----