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Insecure Library Loading

Secunia Advisory SA50050

Calligra Words ODF Style Parsing Buffer Overflow Vulnerability
Secunia Advisory SA50050
Secunia VIM 4.0 - Free Trial
Release Date 2012-08-07
Last Update 2012-08-13
   
Popularity 3,028 views
Comments 0 comments

Criticality level Highly criticalHighly critical
Impact System access
Where From remote
Authentication level This information is available to Secunia VIM customers
   
Report reliability This information is available to Secunia VIM customers
Solution Status Vendor Workaround
   
Systems affected This information is available to Secunia VIM customers
Approve distribution This information is available to Secunia VIM customers
   
Software:
Calligra 2.x

Secunia CVSS Score This information is available to Secunia VIM Customers
CVE Reference(s) CVE-2012-3456 CVSS score available to Secunia VIM customers
  

Description

Accuvant Labs has reported a vulnerability in Calligra, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an error within the "read()" function (filters/words/msword-odf/wv2/src/styles.cpp) when parsing ODF styles and can be exploited to cause a heap-based buffer overflow.

Successful exploitation may allow execution of arbitrary code, but requires tricking a user into opening a specially crafted ODF file.

The vulnerability is reported in versions 2.4.3 and prior.


Solution
Fixed in the GIT repository.

Provided and/or discovered by
Charlie Miller, Accuvant Labs

Changelog
Further details available to Secunia VIM customers

Original Advisory
KDE:
http://www.kde.org/info/security/advisory-20120810-1.txt

Charlie Miller:
http://media.blackhat.com/bh-us-12/Briefings/C_Miller/BH_US_12_Miller_NFC_attack_surface_WP.pdf

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Calligra Words ODF Style Parsing Buffer Overflow Vulnerability
 
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