ProFTPD SIZE Remote Denial of Service Vulnerability

BID:2185

Info

ProFTPD SIZE Remote Denial of Service Vulnerability

Bugtraq ID: 2185
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: Yes
Published: Dec 20 2000 12:00AM
Updated: Dec 20 2000 12:00AM
Credit: reported to bugtraq by Wojciech Purczynski <[email protected]> on Tue Dec 19 2000
Vulnerable: ProFTPD Project ProFTPD 1.2 pre9
ProFTPD Project ProFTPD 1.2 pre8
ProFTPD Project ProFTPD 1.2 pre7
ProFTPD Project ProFTPD 1.2 pre6
ProFTPD Project ProFTPD 1.2 pre5
ProFTPD Project ProFTPD 1.2 pre4
ProFTPD Project ProFTPD 1.2 pre3
ProFTPD Project ProFTPD 1.2 pre2
ProFTPD Project ProFTPD 1.2 pre11
ProFTPD Project ProFTPD 1.2 pre1
ProFTPD Project ProFTPD 1.2
+ Cobalt Qube 3.0
+ Cobalt Qube 2.0
+ Cobalt RaQ 3.0
+ Cobalt RaQ 2.0
+ Cobalt RaQ 1.1
Not Vulnerable:

Discussion

ProFTPD SIZE Remote Denial of Service Vulnerability

A memory leak has been reported in all versions of ProFTPd.

The SIZE FTP command causes the server to misallocate and leak small amounts of memory each time the command is executed.

If a sufficient number of these commands are executed by the server, substantial amounts of system memory can be consumed, allowing a remote attacker to carry out a denial of service attack on the affected host.

This could be problematic if anonymous FTP is enabled or if a malicious local user has been supplied with an FTP login ID.

Exploit / POC

ProFTPD SIZE Remote Denial of Service Vulnerability

x

Solution / Fix

ProFTPD SIZE Remote Denial of Service Vulnerability

Solution:
More information, including patches, can be found at
http://bugs.proftpd.net/show_bug.cgi?id=430


ProFTPD Project ProFTPD 1.2 pre3

ProFTPD Project ProFTPD 1.2 pre1

ProFTPD Project ProFTPD 1.2 pre2

ProFTPD Project ProFTPD 1.2 pre9

ProFTPD Project ProFTPD 1.2 pre4

ProFTPD Project ProFTPD 1.2 pre5

ProFTPD Project ProFTPD 1.2 pre8

ProFTPD Project ProFTPD 1.2 pre11

ProFTPD Project ProFTPD 1.2 pre7

ProFTPD Project ProFTPD 1.2 pre6

References

ProFTPD SIZE Remote Denial of Service Vulnerability

References:
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