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General discussion

Mozilla / NSS S/MIME Implementation Vulnerability

Mar 11, 2004 12:30AM PST

Critical:
Moderately critical
Impact: DoS
System access

Where: From remote



Software: Mozilla 1.0
Mozilla 1.1
Mozilla 1.2
Mozilla 1.3
Mozilla 1.4
Network Security Services (NSS) 3.x




CVE reference: CAN-2003-0564



Description:
A vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system, has been reported in NSS (Network Security Services) security suite and Mozilla browsers shipping vulnerable versions of it.

The vulnerability is caused due to a handling error in the S/MIME (Secure/Multipurpose Internet Mail Extensions) implementation when parsing certain ASN.1 constructs. This can be exploited by sending a specially crafted S/MIME email containing an exceptional ASN.1 element to a user.

The vulnerability reportedly affects NSS 3.8 and prior as well as Mozilla browsers shipping affected versions.

Solution:
The vulnerability has been fixed in NSS 3.9 and Mozilla browsers shipping this version.

Provided and/or discovered by:
NISCC

http://secunia.com/advisories/11096/

Discussion is locked