Security Bulletin
Summary
A GNU C Library(glibc) vulnerability with a stack based overflow was addressed by WebSphere DataPower XC10 Appliance.
On Friday March 11th 2016, a fix was published to resolve this security vulnerability. However, that fix needed revision. A corrected fix is now available.
Vulnerability Details
CVEID: CVE-2015-7547
DESCRIPTION: GNU C Library (glibc) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the nss_dns backend for the getaddrinfo() function when performing dual A/AAAA DNS queries. By sending a specially crafted DNS response, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110662 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
WebSphere DataPower XC10 Appliance versions 2.1 and 2.5 at all firmware levels.
Remediation/Fixes
Apply an interim fix, according to the table below. Interim fixes are associated with the original APAR that is documented in the table. Because these APAR references might be updated to more recent APARs, see the links in the table for the most recent interim fix information.
| Product | Version | APAR | Link to interim fix |
| WebSphere DataPower XC10 Appliance V2.1 on appliance 9235-92X | 2.1 | IT13908 | Refer to the Version 2.1 table in Recommended fixes for WebSphere DataPower XC10 Appliance. |
| WebSphere DataPower XC10 Appliance V2.1 on appliance 7199-92X | 2.1 | IT13908 | Refer to the Version 2.1 table in Recommended fixes for WebSphere DataPower XC10 Appliance. |
| WebSphere DataPower XC10 Appliance V2.5 on appliance 7199-92X | Version 2.5 with SSD drivers Important: See More Information link and follow instructions to determine if you have an old or newer SSD driver on your appliance using the show ssd-version command. | IT13908 | Refer to the Version 2.5 table in Recommended fixes for WebSphere DataPower XC10 Appliance. |
| WebSphere DataPower XC10 Appliance V2.5 virtual image | 2.5 | IT13908 | Refer to the Version 2.5 table in Recommended fixes for WebSphere DataPower XC10 Appliance. |
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References
Change History
15 Mar 2016: Correct iFix URL links
11 Mar 2016: Original version published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
15 June 2018
UID
swg21978214