University of Minnesota Gopherd GSisText Buffer Overflow Vulnerability
Risk
High
Date Discovered
07-11-2003
Description
It has been reported that there is a buffer overflow condition present in gopherd that may be exploited remotely to execute arbitrary code. The affected component is said to be used for determining view-types for gopher objects.
Platforms Affected
Debian Linux 2.1
MandrakeSoft Linux Mandrake 7.1
RedHat Linux 6.2 alpha
RedHat Linux 6.2 i386
RedHat Linux 6.2 sparc
S.u.S.E. Linux 7.0
Components Affected
University of Minnesota gopherd 2.0.3
University of Minnesota gopherd 2.0.4
University of Minnesota gopherd 2.3
University of Minnesota gopherd 2.3.1
University of Minnesota gopherd 3.0 .0
University of Minnesota gopherd 3.0.1
University of Minnesota gopherd 3.0.2
University of Minnesota gopherd 3.0.3
University of Minnesota gopherd 3.0.4
University of Minnesota gopherd 3.0.5
Recommendations
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploying intrusion detection systems may aid in detecting common types of attacks.
Running the server in a closed or restricted environment may limit the consequences of successful exploitation.
By default, gopherd will restrict the process to a chroot jail. Taking advantage of this may reduce the impact of successful exploitation.
Implement multiple redundant layers of security.
Kernel security enhancements such as stack protection and randomly mapped memory pages may limit exposure to stack-based overflow exploits.
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com .
University of Minnesota gopherd 2.0.3:
University of Minnesota gopherd 2.0.4:
University of Minnesota gopherd 2.3:
University of Minnesota gopherd 2.3.1:
University of Minnesota gopherd 3.0 .0:
University of Minnesota gopherd 3.0.1:
University of Minnesota gopherd 3.0.2:
University of Minnesota gopherd 3.0.3:
University of Minnesota gopherd 3.0.4:
University of Minnesota gopherd 3.0.5:
References
Source: UMN gopherd[2.x.x/3.x.x]: remote GSisText()/view buffer overflow exploit.
URL: http://www.securityfocus.com
Credits
Reported by Vade 79 <v9@fakehalo.deadpig.org>.
Copyright (c) 2003 by Symantec Corp.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from symsecurity@symantec.com.
Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
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