ESB-2018.1125 - [Juniper] Northstar Controller: Access privileged data - Remote/unauthenticated 2018-04-12

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             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

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        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

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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

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