TITLE:
BlackBerry Enterprise Server PNG File Handling Vulnerability
SECUNIA ADVISORY ID:
SA18393
VERIFY ADVISORY:
http://secunia.com/advisories/18393/
CRITICAL:
Highly critical
IMPACT:
DoS, System access
WHERE:
>From remote
SOFTWARE:
BlackBerry Enterprise Server for Novell GroupWise 4.x
http://secunia.com/product/6715/
BlackBerry Enterprise Server for Exchange 4.x
http://secunia.com/product/4530/
BlackBerry Enterprise Server for Domino 4.x
http://secunia.com/product/4531/
DESCRIPTION:
FX has been reported a vulnerability in BlackBerry Enterprise Server,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially to compromise a vulnerable system.
The vulnerability is caused due to an unspecified error in the
BlackBerry Attachment Service when rendering malformed PNG image
attachments. This can be exploited to cause a heap-based buffer
overflow, which can cause BlackBerry users to be unable to view file
attachments and may allow arbitrary code execution on the server.
Successful exploitation requires that the user views a malicious PNG
attachment on a BlackBerry Handheld.
The vulnerability has been reported in version 4.0 through version
4.0 Service Pack 2.
SOLUTION:
Apply BlackBerry Enterprise Server 4.0 Service Pack 3.
https://www.blackberry.com/Downloads/
BlackBerry Enterprise Server 4.0 for Microsoft Exchange:
Apply Service Pack 3, then install Service Pack 3, Hotfix 1.
BlackBerry Enterprise Server 4.0 for IBM Lotus Domino/Novell
GroupWise:
Apply Service Pack 3.
PROVIDED AND/OR DISCOVERED BY:
FX, Phenoelit.
ORIGINAL ADVISORY:
http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/8021/728075/728850/728215/?nodeid=1167794
OTHER REFERENCES:
US-CERT VU#646976:
http://www.kb.cert.org/vuls/id/646976
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.