Bug 821416 - (CVE-2006-0138) CVE-2006-0138 amsn: DoS (client hang, termination of client's IM session) via repeatedly sending crafted data to default file-transfer port
CVE-2006-0138 amsn: DoS (client hang, termination of client's IM session) via...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 821435
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Reported: 2012-05-14 08:41 EDT by Jan Lieskovsky
Modified: 2012-08-25 20:22 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Description Jan Lieskovsky 2012-05-14 08:41:08 EDT
Common Vulnerabilities and Exposures assigned an identifier CVE-2006-0138 to the following vulnerability:

aMSN (aka Alvaro's Messenger) allows remote attackers to cause a denial of service (client hang and termination of client's instant-messaging session) by repeatedly sending crafted data to the default file-transfer port (TCP 6891). 

[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0138
[2] http://www.osvdb.org/22186
[3] https://bugs.gentoo.org/show_bug.cgi?id=415861
[4] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=557754

[5] http://www.securiteam.com/exploits/5JP090KHFQ.html

Upstream ticket:
[6] http://sourceforge.net/tracker/?func=detail&aid=2921641&group_id=54091&atid=472655
Comment 1 Jan Lieskovsky 2012-05-14 08:45:54 EDT
I have tried to test / reproduce this issue on Fedora-15 / Fedora-16 versions (based on [5]), but unable to reproduce it, because according to aMSN -> Account -> Preferences -> Connection tab -> "File transfer, peer-to-peer and NAT settings" and "Test port" button my connection is:

"You are firewalled or behind a router"

thus running the ./dos.pl from [5] returns 'Connection refused' for me. But since there doesn't seem to be an upstream patch for this issue yet, I would say Fedora-15 and Fedora-16 amsn package versions are still vulnerable to this issue.

Please schedule an update once there is final upstream patch version available.
Comment 2 Jan Lieskovsky 2012-05-14 09:22:23 EDT
Created amsn tracking bugs for this issue

Affects: fedora-all [bug 821435]
Comment 3 Fedora Update System 2012-08-25 20:22:20 EDT
amsn-0.98.9-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

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