ESB-2018.0257 - [Appliance][Virtual] Symantec Reporter: Unauthorised access - Remote/unauthenticated 2018-01-24

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0257
          SA158: Improper Restriction of Excessive Authentication
                           Attempts in Reporter
                              24 January 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Symantec Reporter
Publisher:         Symantec
Operating System:  Network Appliance
                   Virtualisation
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15531  

Original Bulletin: 
   https://www.symantec.com/security-center/network-protection-security-advisories/SA158

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SA158: Improper Restriction of Excessive Authentication Attempts in Reporter

Security Advisory ID:

SA158

Published Date:

Jan 23, 2018

Advisory Status:

Interim

Advisory Severity:

High

CVSS v2 base score: 8.3 (AV:A/AC:L/Au:N/C:C/I:C/A:C)

CVE Number:

CVE-2017-15531 - 8.3 (HIGH) (AV:A/AC:L/Au:N/C:C/I:C/A:C)

Symantec Reporter does not restrict excessive authentication attempts for 
management interface users. A remote attacker can use brute force search to 
guess a user password and gain access to Reporter.

Affected Products:

Reporter

Reporter 9.5 prior to 9.5.4.1 and 10.1 are vulnerable. Reporter 10.2 is not 
vulnerable.

Advisory Details:

Symantec Reporter provides reporting capabilities for the Symantec ProxySG 
appliance, Secure Web Gateway (SWG) solution, and the Web Security Services 
(WSS). Reporter provides authentication and role-based access control for:

administrator users: can manage Reporter's configuration and access all 
reporting information stored on it.

standard users: only can access reporting information determined by the user 
roles and the reporting fields that the roles are authorized to access.

Reporter does not restrict excessive authentication attempts for administrator
and standard users, making it susceptible to a brute force password guessing 
attack (CVE-2017-15531). A remote attacker, with access to the management 
interface, can use brute force search to guess a user password and gain access
to Reporter and the reporting information that the user is authorized to 
access. Reporter logs all successful and unsuccessful authentication attempts
in the system event log.

This vulnerability can be exploited only through the Reporter management 
interface. Symantec recommends that customers deploy Reporter in a secure 
network and restrict access to the management interface. Not deploying the 
appliance in a secure network or restricting management interface access 
increases the threat of exploiting the vulnerability.

Workarounds:

Symantec recommends that customers deploy Reporter in a secure network and 
restrict access to the management interface.

Patches:

Reporter

Reporter 10.2 - a fix is available in 10.2.1.1.

Reporter 10.1 - a fix will not be provided. Please upgrade to a later version
with the vulnerability fixes.

Reporter 9.5 - a fix is available in 9.5.4.1.

References:

CVE-2017-15531 - https://nvd.nist.gov/vuln/detail/CVE-2017-15531

Advisory History:

2018-01-23 initial public release

Acknowledgements:

Symantec would like to thank Dhiraj Mishra (@mishradhiraj_) for reporting this
vulnerability.

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