WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

BID:8821

Info

WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

Bugtraq ID: 8821
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: Oct 14 2003 12:00AM
Updated: Oct 14 2003 12:00AM
Credit: Discovery is credited to <[email protected]>.
Vulnerable: Adiscon WinSyslog 5.0 beta
Adiscon WinSyslog 4.21 SP1
Adiscon MonitorWare Agent 1.3
Not Vulnerable: Adiscon WinSyslog 5.0
Adiscon WinSyslog 4.2.36

Discussion

WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

WinSyslog is prone to a remotely exploitable denial of service vulnerability. The issue exists in the Interactive Syslog Server specifically. This occurs when the program receives multiple excessive syslog messages via the port it listens on (10514/UDP by default). This is also reported to cause system instability, which is likely due to resource exhaustion.

The issue does not affect the WinSyslog or MonitorWare agent services. This issue affects versions of WinSyslog prior to 2003-09-15. The vendor has released hot fixes for the MonitorWare Agent product, which also includes the vulnerable component.

Exploit / POC

WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

The following exploit script was submitted:

Solution / Fix

WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

Solution:
The vendor has addressed this in WinSyslog versions 5.0 final and 4.2.36. Hot fixes are also available.


Adiscon MonitorWare Agent 1.3

Adiscon WinSyslog 4.21 SP1

Adiscon WinSyslog 5.0 beta

References

WinSyslog Interactive Syslog Server Long Message Remote Denial Of Service Vulnerability

References:

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