ChaSen: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201207-03 / ChaSen
Release Date	July 09, 2012
Latest Revision	July 09, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/chasen	< 2.4.4-r2	>= 2.4.4-r2	All supported architectures

Related bugreports: #390769

Synopsis

A buffer overflow vulnerability in ChaSen could result in the execution of arbitrary code.

2. Impact Information

Background

ChaSen is a Japanese morphological analysis system.

Description

An error in chalib.c of ChaSen could cause a buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted text file using ChaSen or an application using the ChaSen libraries, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ChaSen users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-text/chasen-2.4.4-r2"

4. References

CVE-2011-4000

Page updated July 09, 2012

Summary: This is a Gentoo Linux Security Advisory

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