Claws Mail Plugins Certificate Validation Security Bypass Vulnerability

Bugtraq ID:	66466
Class:	Design Error
CVE:	CVE-2014-2576
Remote:	Yes
Local:	No
Published:	Mar 11 2014 12:00AM
Updated:	Mar 11 2014 12:00AM
Credit:	Marcus Meissner
Vulnerable:	Claws-Mail Claws-Mail 3.9.3
Not Vulnerable:

Claws Mail Plugins Certificate Validation Security Bypass Vulnerability

Claws Mail is prone to a security-bypass vulnerability because the application fails to properly validate SSL certificates.

Successfully exploiting this issue allows attackers to perform man-in-the-middle attacks or impersonate trusted servers, gain sensitive information and aid in further attacks.

Claws Mail 3.9.3 is vulnerable. other versions may also be affected.

Claws Mail Plugins Certificate Validation Security Bypass Vulnerability

An attacker can use readily available network utilities to exploit this issue.

Claws Mail Plugins Certificate Validation Security Bypass Vulnerability

Solution:
Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Claws Mail Plugins Certificate Validation Security Bypass Vulnerability

References:

• Bug 3105 - vcal plugin via https does not check SSL peer certificates or host (Claws Mail)
  
• Bug 3106 - rssyl plugin does not verify SSL peer at all (Claws Mail)
  
• Claws Mail Home Page (Claws Mail)