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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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