DSA-2018-040: RSA® Authentication Agent for Web for IIS and Apache Web Server Multiple Vulnerabilities

[EMC Product Security Response Center <Security_Alert () emc com>]

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DSA-2018-040: RSA® Authentication Agent for Web for IIS and Apache Web Server Multiple Vulnerabilities 

Dell EMC Identifier: DSA-2018-040
CVE Identifier:  CVE-2018-1232, CVE-2018-1233, CVE-2018-1234
Severity: High
Severity Rating:  CVSS v3 Base Score: See below for scores.

Affected Products:
RSA Authentication Agent for Web for IIS version 8.0.1 and earlier (All CVEs)
RSA Authentication Agent for Web for Apache Web Server version 8.0.1 and earlier (CVE-2018-1232 and CVE-2018-1233 only) 

Summary:
RSA Authentication Agent for Web for both IIS and Apache Web Server version 8.0.1 and earlier contain multiple 
vulnerabilities that could potentially be exploited by malicious users to compromise affected systems.


Details:
Stack-based Buffer Overflow Vulnerability (CVE-2018-1232) 
RSA Authentication Agent for Web for both IIS and Apache Web Server are impacted by a stack-based buffer overflow which 
may occur when handling certain malicious web cookies that have invalid formats. The attacker could exploit this 
vulnerability to crash the authentication agent and cause a denial-of-service situation.

CVSSv3 Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Cross-site Scripting Vulnerability (CVE-2018-1233) 
RSA Authentication Agent for Web for both IIS and Apache Web Server are affected by a cross-site scripting 
vulnerability. The attackers could potentially exploit this vulnerability to execute arbitrary HTML or JavaScript code 
in the user’s browser session in the context of the affected website.

CVSSv3 Base Score: 6.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
 

Sensitive Information Disclosure Vulnerability (CVE-2018-1234)
RSA Authentication Agent for Web for IIS is affected by a problem where access control list (ACL) permissions on a 
Windows Named Pipe were not sufficient to prevent access by unauthorized users. The attacker with local access to the 
system can exploit this vulnerability to read configuration properties for the authentication agent.

CVSSv3 Base Score: 6.6 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L)
 

Recommendation:
The following RSA Authentication Agent for Web releases contain resolutions for these vulnerabilities:

RSA Authentication Agent for Web for IIS version 8.0.2 and later
RSA Authentication Agent for Web for Apache Web Server version 8.0.2 and later
RSA recommends all customers upgrade at the earliest opportunity.


Credits:
RSA would like to thank Harrison Neal for reporting vulnerabilities identified under CVE-2018-1232 and CVE-2018-1234. 

Severity Rating:
For an explanation of Severity Ratings, refer to the Knowledge Base Article, “Security Advisories Severity Rating” at 
https://knowledge.rsasecurity.com/scolcms/knowledge.aspx?solution=a46604. RSA recommends all customers take into 
account both the base score and any relevant temporal and environmental scores which may impact the potential severity 
associated with particular security vulnerability.
 

EOPS Policy:
RSA has a defined End of Primary Support policy associated with all major versions. Please refer to the Product Version 
Life Cycle for additional details.


RSA Link Security Advisories:
Read and use the information in this RSA Security Advisory to assist in avoiding any situation that might arise from 
the problems described herein. If you have any questions regarding this product alert, contact RSA Software Technical 
Support at 1-800-995-5095. RSA Security LLC and its affiliates, including without limitation, its ultimate parent 
company, Dell Technologies, distribute RSA Security Advisories in order to bring to the attention of users of the 
affected RSA products, important security information. RSA recommends that all users determine the applicability of 
this information to their individual situations and take appropriate action. The information set forth herein is 
provided "as is" without warranty of any kind. RSA disclaims all warranties, either express or implied, including the 
warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall RSA, its 
affiliates or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, 
consequential, loss of business profits or special damages, even if RSA, its affiliates or its suppliers have been 
advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of liability 
for consequential or incidental damages, so the foregoing limitation may not apply.
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