|Applies To||RSA Authentication Manager Express 1.0|
RSA Authentication Manager Appliance 3.0.4
RSA Authentication Manager 8.1.1 (and earlier)
SUSE Linux Entrprise Server - SLES 11.3
|Scanning Tool and Version||Not identified by scan (but could be in the future).|
|Article Summary||Information about the impact of CVE-2015-0235 in several versions of AM. This KB was created in response to a request to provide a Security KB article with additional details.|
|Link to Advisories||Description of the issue from Qualys|
Additional info in security mailing list
|Alert Impact||Not Exploitable|
|Technical Details||The flaw exists but it is not exploitable|
|Technical Details Explanation|
Description (from the National Vulnerability Database (NVD)):
Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-dependent attackers to execute arbitrary code via vectors related to the (1) gethostbyname or (2) gethostbyname2 function, aka "GHOST."
CVSS v2 Base Score: 10.0 (HIGH)
Response: The flaw exists but is not exploitable
The description of the issue (as provided by the discoverer) points out that the vulnerability has a number of specific requirements in addition to the presence of the vulnerable library and these requirements are not available through any interface of the AM or AMX appliance.
The issue is a buffer overflow which occurs in __nss_hostname_digits_dots overwriting up to 4 bytes on 32-bit systems and 8 bytes on 64 bit-systems. Originally fixed on May 21, 2013, it was not considered a security threat and the fix was not included most stable and long-term-support Linux distributions.
The vulnerability is exploited by passing a special crafted hostname to an
interface which performs hostname to ip resolution with gethostbyname().
In order to reach the overflow, the hostname argument must
meet the following requirements:
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 Corporation distributes 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 or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if RSA or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.