16-0007-008

Security Bulletin for MiVB-X
SECURITY BULLETIN ID: 16-0007-008
RELEASE VERSION: 1.0
DATE: 2016-04-08
SECURITY BULLETIN 16-0007-008 V1.0
OVERVIEW
This security bulletin provides product-specific details on the vulnerability described in Mitel Security Advisory 16-0007.
Visit http://www.mitel.com/security-advisories for more details.
MiVoice Business Express (MiVB-X) has been confirmed as being affected by a DNS libresolv vulnerability in glibc
(CVE-2015-7547).
Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C
Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute
arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or
AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.
APPLICABLE PRODUCTS
This security bulletin provides information on the following products:
PRODUCT NAME
VERSION(S) AFFECTED
SOLUTION(S) AVAILABLE
Micollab with Voice
6.0.207.0
Upgrade OVA to 6.0.209.0
MiVoice Business Express
7.0.0.102
Upgrade to MSL 10.3.38.0 or
upgrade OVA to 7.0.0.103
RISK / EXPOSURE
Below are the CVSS scores as published by the vendor:
CVSS V2.0 OVERALL SCORE:
6.8
CVSS V2.0 VECTOR:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS BASE SCORE:
6.8
CVSS TEMPORAL SCORE:
n/a
CVSS ENVIRONMENTAL SCORE:
n/a
OVERALL RISK LEVEL:
Moderate
MITIGATION / WORKAROUNDS
There is no specific mitigation for the vulnerabilities apart from updating the glibc version on the MSL platform.
PATCH INFORMATION
New releases of the MiVoice Businesss Express OVA (6.0.209.0 and 7.0.0.103) are available with the updated glibc
package, providing fixes for the reported vulnerability. Customers should upgrade to MiVoice Business Express
6.0.209.0 and 7.0.0.103 as applicable. Please contact Product Support for more information.
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