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securityvulnsSecurityvulnsSECURITYVULNS:DOC:11516
HistoryFeb 20, 2006 - 12:00 a.m.

[SA18702] NJStar Word Processor Font Name Buffer Overflow

2006-02-2000:00:00
vulners.com
13

TITLE:
NJStar Word Processor Font Name Buffer Overflow

SECUNIA ADVISORY ID:
SA18702

VERIFY ADVISORY:
http://secunia.com/advisories/18702/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
NJStar Japanese Word Processor 5.x
http://secunia.com/product/8154/
NJStar Japanese Word Processor 4.x
http://secunia.com/product/8153/
NJStar Chinese Word Processor 5.x
http://secunia.com/product/8152/
NJStar Chinese Word Processor 4.x
http://secunia.com/product/8151/

DESCRIPTION:
Secunia Research has discovered a vulnerability in NJStar Word
Processor, which can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to a boundary error within the
handling of font names read from a NJStar document file (".njx").
This can be exploited to cause a stack-based buffer overflow.

Successful exploitation allows arbitrary code execution when a
malicious ".njx" file is opened.

The vulnerability has been confirmed in the following products:

  • NJStar Japanese Word Processor 5.01.41108.
  • NJStar Chinese Word Processor 5.01.41108.

The vendor has reported that the vulnerability also affects NJStar
Chinese/Japanese Word Processor versions 4.x and 5.0x.

SOLUTION:
Update to version 5.10.
http://www.njstar.com/info/download.php

PROVIDED AND/OR DISCOVERED BY:
Tan Chew Keong, Secunia Research.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2006-5/


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.