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

[EMC Product Security Response Center <Security_Alert@xxxxxxx>]

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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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