UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

BID:1591

Info

UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

Bugtraq ID: 1591
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: Yes
Published: Aug 20 2000 12:00AM
Updated: Aug 20 2000 12:00AM
Credit: Posted to Bugtraq on August 20, 2000 by Chris Sharp <[email protected]>.
Vulnerable: University of Minnesota gopherd 2.3.1 p0
- Debian Linux 2.1
- Mandriva Linux Mandrake 7.1
- Redhat Linux 6.2 sparc
- Redhat Linux 6.2 i386
- Redhat Linux 6.2 alpha
- SuSE Linux 7.0
Not Vulnerable:

Discussion

UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

It is possible to either execute arbitrary code or crash a remote system running University of Minnesota's Gopher Daemon, depending on the data entered. An unchecked buffer exists in the 'halidate' function of Gopherd, where the 512 byte buffer can be overwritten with approximately 600 bytes of data.

Exploit / POC

UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

Chris Sharp <[email protected]> has released the following exploit:

Solution / Fix

UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

Solution:
Currently the SecurityFocus staff 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: [email protected].

References

UMN Gopherd 2.x Halidate Function Buffer Overflow Vulnerability

References:
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