LibTMCG Missing Range Check Insecure Group Generation Vulnerability

BID:23930

Info

LibTMCG Missing Range Check Insecure Group Generation Vulnerability

Bugtraq ID: 23930
Class: Design Error
CVE: CVE-2007-2640
Remote: Yes
Local: No
Published: May 11 2007 12:00AM
Updated: May 07 2015 05:39PM
Credit: The vendor disclosed this issue.
Vulnerable: LibTMCG LibTMCG 1.1
LibTMCG LibTMCG 1.0.1
LibTMCG LibTMCG 1.0
Not Vulnerable: LibTMCG LibTMCG 1.1.1

Discussion

LibTMCG Missing Range Check Insecure Group Generation Vulnerability

LibTMCG generates groups in an insecure way.

Successfully exploiting this issue allows attackers to choose insecure values during the group-generation process. This results in the compromise of the security properties of the encryption algorythm implemented in the library. Exploiting this issue allows attackers to access potentially sensitive information. Other attacks may also be possible.

Versions of LibTMCG prior to 1.1.1 are vulnerable.

Exploit / POC

LibTMCG Missing Range Check Insecure Group Generation Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

LibTMCG Missing Range Check Insecure Group Generation Vulnerability

Solution:
Version 1.1.1 of the affected library is available to address this issue. Please see the references for more information.


LibTMCG LibTMCG 1.0

LibTMCG LibTMCG 1.0.1

LibTMCG LibTMCG 1.1

References

LibTMCG Missing Range Check Insecure Group Generation Vulnerability

References:
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