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WinSyslog Long Syslog Message Denial of Service
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Secunia Advisory:
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SA10004
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Release Date:
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2003-10-15
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Last Update:
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2003-10-21
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Popularity:
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5,238 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | WinSyslog 4.x
WinSyslog 5.x
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Subscribe:
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Description:
A vulnerability has been reported in WinSyslog, which can be exploited by malicious people to cause a DoS (Denial of Service) on a vulnerable syslog server.
The vulnerability is caused due to an error when the interactive syslog server receives and displays syslog events. This can be exploited by sending UDP datagrams containing arbitrary, overly large amounts of data to the interactive server (default port 10514/udp), which will cause it to freeze and halt the OS.
The vulnerability has been reported in version 4.21 SP1. However, other versions may also be affected.
Solution:
Update to version 5.0 final or apply hotfix.
Hotfix for WinSyslog (including 5.0 beta):
http://www.adiscon.org/download/WinSyslog-hotfix-2003-09-15.zip
Hotfix for MonitorWare Agent:
http://www.adiscon.org/download/MWAgent-hotfix-2003-09-15.zip
Provided and/or discovered by:
STORM
Changelog:
2003-10-21: Vendor issues fix. Updated "Solution" section and added link to original advisory.
Original Advisory:
Potential DoS in Interactive Syslog Server:
http://www.adiscon.com/Common/en/advisory/2003-09-15.asp
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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