6927 : Courier shiftjis.c Unicode Character Handling Remote Buffer Overflow
Printer | http://osvdb.org/6927 | Email This | Edit Vulnerability

Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
2 1646 about 10 years ago about 1 month ago 10 times 90%


Disclosure Date


Multiple Courier products contain an overflow condition in the file shiftjis.c. The issue is triggered as user-supplied input is not properly validated when a unicode character is out of BMP range. With a specially crafted request, a remote attacker can cause a stack-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.


Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified


It has been reported that this issue has been fixed. Upgrade to Courier Mail Server version 0.45, Courier IMAP version 3.0.0, Courier SqWebMail version 4.0.0, or higher, to address this vulnerability.


Double Precision, Inc
Courier Mail Server
0.45 (not affected)
4.0.0 (not affected)
Courier IMAP
3.0.0 (not affected)


Tools & Filters

1206 1210
12102 12103 19044


Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1


No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

© Copyright 2002 - 2014 Open Sourced Vulnerability Database (OSVDB), All Rights Reserved.
Privacy Statement - Terms of Use