Ekiga SIPURL::GetHostAddress() Memory Corruption Bug Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1018683 |
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SecurityTracker URL: http://securitytracker.com/id/1018683
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CVE Reference:
CVE-2007-4897
(Links to External Site)
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Updated: Oct 8 2007
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Original Entry Date: Sep 12 2007
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.0.5 and prior versions
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Description:
A vulnerability was reported in Ekiga (GnomeMeeting). A remote user can cause denial of service conditions.
A remote user can send a specially crafted SIP URL to cause the target service to crash.
The vulnerability resides in the SIPURL::GetHostAddress() function.
The vendor was notified on July 9, 2007.
The original advisory is available at:
http://www.s21sec.com/avisos/s21sec-036-en.txt
Jose Miguel Esparza of S21Sec reported this vulnerability.
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Impact:
A remote user can cause denial of service conditions.
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Solution:
The report indicates that version 2.0.7 is not affected.
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Vendor URL: www.ekiga.org/ (Links to External Site)
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Cause:
Access control error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Subject: [Full-disclosure] S21SEC-036-EN Ekiga <= 2.0.5 Denial of service
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##############################################################
- S21Sec Advisory -
##############################################################
Title: Ekiga Denial of Service
ID: S21SEC-036-en
Severity: Medium - Remote DoS
History: 14.May.2007 Vulnerability discovered
09.Jul.2007 Vendor contacted
Scope: Application Denial of Service
Platforms: Any
Author: Jose Miguel Esparza (jesparza@s21sec.com)
URL: http://www.s21sec.com/avisos/s21sec-036-en.txt
Release: Public
[ SUMMARY ]
Ekiga (formely known as GnomeMeeting) is an open source VoIP and
video conferencing application for
GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many
audio and video codecs, and is
interoperable with other SIP compliant software and also with
Microsoft NetMeeting.
[ AFFECTED VERSIONS ]
Following versions are affected with this issue:
- Ekiga 2.0.5 and prior.
[ DESCRIPTION ]
Due to a bad management of memory allocation for the input data it's
possible to crash the application
causing a denial of service.
[ WORKAROUND ]
Upgrade to 2.0.7 or 2.0.9 versions is recommended to resolve this
problem. If not possible, some
additional input data check will be necessary in the
SIPURL::GetHostAddress() function.
[ ACKNOWLEDGMENTS ]
This vulnerability have been found and researched by:
- Jose Miguel Esparza <jesparza@s21sec.com> S21Sec
[ ADDITIONAL INFORMATION ]
This vulnerability has been discovered thanks to the network fuzzer
Malybuzz disponible in the url
http://malybuzz.sourceforge.net/.
[ REFERENCES ]
* Ekiga
http://ekiga.org
* S21Sec
http://www.s21sec.com
* S21sec Blog
http://blog.s21sec.com
* Malybuzz
http://www.s21sec.com/malybuzz/malybuzz.html
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
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