Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2471 JSA11207 - 2021-07 Security Bulletin: Junos OS and Junos OS Evolved: Multiple vulnerabilities in cURL resolved 21 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Junos OS Junos OS Evolved Publisher: Juniper Networks Operating System: Juniper Impact/Access: Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-8286 CVE-2020-8285 CVE-2020-8284 Reference: ASB-2021.0152 ASB-2021.0150 ESB-2021.2365 ESB-2021.2232 ESB-2021.2228 Original Bulletin: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11207 - --------------------------BEGIN INCLUDED TEXT-------------------- 2021-07 Security Bulletin: Junos OS and Junos OS Evolved: Multiple vulnerabilities in cURL resolved Article ID : JSA11207 Last Updated: 20 Jul 2021 Version : 3.0 Product Affected: These issues affect all versions of Junos OS and Junos OS Evolved. Problem: Multiple vulnerabilities have been resolved in Juniper Networks Junos OS and Junos OS Evolved by updating cURL third party software. These vulnerabilities may allow an attacker who tricks an administrator with access to the CLI to reference a malicious URL, to expose information, or cause a Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: o all versions prior to 15.1R7-S9; o 17.3 versions prior to 17.3R3-S12; o 17.4 versions prior to 17.4R3-S5; o 18.1 versions prior to 18.1R3-S13; o 18.2 version 18.2R1 and later versions; o 18.3 versions prior to 18.3R3-S5; o 18.4 versions prior to 18.4R2-S9, 18.4R3-S9; o 19.1 versions prior to 19.1R3-S5; o 19.2 versions prior to 19.2R3-S2; o 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; o 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; o 20.1 versions prior to 20.1R2-S2, 20.1R3; o 20.2 versions prior to 20.2R2-S3, 20.2R3; o 20.3 versions prior to 20.3R2; o 20.4 versions prior to 20.4R1-S1, 20.4R2. Juniper Networks Junos OS Evolved versions prior to 20.4R2-EVO. This issue was discovered during external security research. Security issues resolved include: CVE CVSS Summary A malicious server can use the FTP PASV response 3.7 ( CVSS:3.1 to trick curl 7.73.0 and earlier into connecting /AV:N/AC:H/ back to a given IP address and port, and this way CVE-2020-8284 PR:N/UI:N/S:U/ potentially make curl extract information about C:L/I:N/A:N ) services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions. 7.5 ( CVSS:3.1 curl 7.41.0 through 7.73.0 is vulnerable to an CVE-2020-8286 /AV:N/AC:L/ improper check for certificate revocation due to PR:N/UI:N/S:U/ insufficient verification of the OCSP response. C:N/I:H/A:N ) 7.5 ( CVSS:3.1 curl 7.21.0 to and including 7.73.0 is vulnerable CVE-2020-8285 /AV:N/AC:L/ to uncontrolled recursion due to a stack overflow PR:N/UI:N/S:U/ issue in FTP wildcard match parsing. C:N/I:N/A:H ) Solution: The following software releases have been updated to resolve these specific issues: Junos OS 15.1R7-S9, 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.3R3-S5, 18.4R2-S9*, 18.4R3-S9*, 19.1R3-S5, 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R2-S4, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R2-S3, 20.2R3, 20.3R2, 20.4R1-S1, 20.4R2, 21.1R1, and all subsequent releases. Junos OS Evolved 20.4R2-EVO, 21.1R1-EVO, and all subsequent releases. *Late availability This issue is being tracked as 1575921 and 1562153 . Workaround: Use access lists or firewall filters to limit access to the device via CLI only from trusted hosts and administrators. Implementation: Software releases or updates are available for download at https:// support.juniper.net/support/downloads/ Modification History: 2021-07-14: Initial Publication. 2021-07-20: Updated PRODUCT AFFECTED field to match PROBLEM text. CVSS Score: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) Severity Level: Medium 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. 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 iQIVAwUBYPfDt+NLKJtyKPYoAQgiIg//YXZoOQ7wog4oCuXC3LZQGn5QMeTEIJUr wTV9pakpDSqUgWUx136ySfIjNbQI6gpBtl3GTYasJDdnFhDPbvzddJvgsq5mQWvf 05shfvZJPBF3qP0aYomEWic+Qfq2xhUOfmRacoHzUdVEun39Fhd2pE2X4Xa8LSoi lEKi/fFObQtHIHDHfOHvMjZYoj/GzHV0fBvrNxyY45AxUcxeHFEBJH7Rml6BRYOU wIwvJXGxCgi0/ojXz4Hq3oRuldLrrXkZkLa6vXXOVsNia5z2K7Dq4U8D61u0r2dB tfLEC73cFPnjepaPC4Zq73uQmao04yz2VaXmmX7x6533xuN0xTEVUlpfAVXKwl38 HGaaJoBv6ov4S1pjJGttYYZxXniYcATa28vo93a9iS65xQxQOSJs2+BUskFqi4rs zgQUtjGnNqtq2OhBr7VcL/AKvpciDvJZk/Y49nD6fclcfCVwRheG+FpZHYtSEah3 d0GV6bwD3iY4Lwm7P0IfANv2g6WKOL6ulcVMQUZs61a9egk84h2oRRbBVy75KrL6 GhlYa8hVbx5gvUfip2OVMwaO5XY3KEEcilHzaiXTv96y8DFwiM/7I5DwyvWs2l4x 2ugeIypjHhuuyf6dWq5C3+pijwyNnU1alIRMlw0ANyXG0KWfIuZRx+2ejSPtHWCA uzwVPHRH3B0= =XxXb -----END PGP SIGNATURE-----