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Repetitive error

P: n/a
Hi guys,

We get the below error on our temple website every 2 hours or so; I
think someone is trying to hijack the 'contact.aspx' page somehow to
send spam emails, I am not sure though.

The strange thing is the 'referer' is 'contact.aspx' and the 'path' is
an article on the website ('blind_eye.aspx'). EVERY TIME this error
happens these two pages are involved, so I am guessing it is an
intentional act by someone that is causing this.

Does anyone know what is actually happening below and how to put a
stop to it, as it happens every two hours?
System.Web.HttpException: The state information is invalid for this
page and might be corrupted. ---System.Web.UI.ViewStateException:
Invalid viewstate.
Client IP: 201.37.174.74
Port: 2271
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1)
ViewState: /wEPDwUKLTU4MDE5NTg0NWRkKYJWzJJxaGEwGDqBITc+XW3yRT0
Referer: http://vihara.org.au/t7/contact.aspx
Path: /t7/youth/articles/authors/rasikaw/blind_eye.aspx --->
System.FormatException: Invalid length for a Base-64 char array.
at System.Convert.FromBase64String(String s)
at System.Web.UI.ObjectStateFormatter.Deserialize(Str ing
inputString)
at
System.Web.UI.ObjectStateFormatter.System.Web.UI.I StateFormatter.Deserialize(String
serializedState)
at System.Web.UI.Util.DeserializeWithAssert(IStateFor matter
formatter, String serializedState)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Web.UI.ViewStateException.ThrowError(Except ion inner,
String persistedState, String errorPageMessage, Boolean
macValidationError)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
at System.Web.UI.Page.LoadPageStateFromPersistenceMed ium()
at System.Web.UI.Page.LoadAllState()
at System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(Http Context
context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at
ASP.youth_articles_authors_rasikaw_blind_eye_aspx. ProcessRequest(HttpContext
context)
at
System.Web.HttpApplication.CallHandlerExecutionSte p.System.Web.HttpApplication.IExecutionStep.Execut e()
at System.Web.HttpApplication.ExecuteStep(IExecutionS tep step,
Boolean& completedSynchronously)

Jun 2 '07 #1
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2 Replies


P: n/a
If its repetitive, see if you can identify the IP of the request initiator
and block it in IIS.

Regards

John Timney (MVP)
http://www.johntimney.com
http://www.johntimney.com/blog

"Rasika WIJAYARATNE" <ra*****@gmail.comwrote in message
news:11**********************@j4g2000prf.googlegro ups.com...
Hi guys,

We get the below error on our temple website every 2 hours or so; I
think someone is trying to hijack the 'contact.aspx' page somehow to
send spam emails, I am not sure though.

The strange thing is the 'referer' is 'contact.aspx' and the 'path' is
an article on the website ('blind_eye.aspx'). EVERY TIME this error
happens these two pages are involved, so I am guessing it is an
intentional act by someone that is causing this.

Does anyone know what is actually happening below and how to put a
stop to it, as it happens every two hours?
System.Web.HttpException: The state information is invalid for this
page and might be corrupted. ---System.Web.UI.ViewStateException:
Invalid viewstate.
Client IP: 201.37.174.74
Port: 2271
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1)
ViewState: /wEPDwUKLTU4MDE5NTg0NWRkKYJWzJJxaGEwGDqBITc+XW3yRT0
Referer: http://vihara.org.au/t7/contact.aspx
Path: /t7/youth/articles/authors/rasikaw/blind_eye.aspx --->
System.FormatException: Invalid length for a Base-64 char array.
at System.Convert.FromBase64String(String s)
at System.Web.UI.ObjectStateFormatter.Deserialize(Str ing
inputString)
at
System.Web.UI.ObjectStateFormatter.System.Web.UI.I StateFormatter.Deserialize(String
serializedState)
at System.Web.UI.Util.DeserializeWithAssert(IStateFor matter
formatter, String serializedState)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Web.UI.ViewStateException.ThrowError(Except ion inner,
String persistedState, String errorPageMessage, Boolean
macValidationError)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
at System.Web.UI.Page.LoadPageStateFromPersistenceMed ium()
at System.Web.UI.Page.LoadAllState()
at System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(Http Context
context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at
ASP.youth_articles_authors_rasikaw_blind_eye_aspx. ProcessRequest(HttpContext
context)
at
System.Web.HttpApplication.CallHandlerExecutionSte p.System.Web.HttpApplication.IExecutionStep.Execut e()
at System.Web.HttpApplication.ExecuteStep(IExecutionS tep step,
Boolean& completedSynchronously)

Jun 3 '07 #2

P: n/a
If you're using ASP.NET 1.1, reading this KB might help you :
http://support.microsoft.com/default.aspx/kb/831150

There's background info on this problem at :
http://support.microsoft.com/default...;en-us;q316920

Juan T. Llibre, asp.net MVP
asp.net faq : http://asp.net.do/faq/
foros de asp.net, en español : http://asp.net.do/foros/
======================================
"Rasika WIJAYARATNE" <ra*****@gmail.comwrote in message
news:11**********************@j4g2000prf.googlegro ups.com...
Hi guys,

We get the below error on our temple website every 2 hours or so; I
think someone is trying to hijack the 'contact.aspx' page somehow to
send spam emails, I am not sure though.

The strange thing is the 'referer' is 'contact.aspx' and the 'path' is
an article on the website ('blind_eye.aspx'). EVERY TIME this error
happens these two pages are involved, so I am guessing it is an
intentional act by someone that is causing this.

Does anyone know what is actually happening below and how to put a
stop to it, as it happens every two hours?
System.Web.HttpException: The state information is invalid for this
page and might be corrupted. ---System.Web.UI.ViewStateException:
Invalid viewstate.
Client IP: 201.37.174.74
Port: 2271
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1)
ViewState: /wEPDwUKLTU4MDE5NTg0NWRkKYJWzJJxaGEwGDqBITc+XW3yRT0
Referer: http://vihara.org.au/t7/contact.aspx
Path: /t7/youth/articles/authors/rasikaw/blind_eye.aspx --->
System.FormatException: Invalid length for a Base-64 char array.
at System.Convert.FromBase64String(String s)
at System.Web.UI.ObjectStateFormatter.Deserialize(Str ing
inputString)
at
System.Web.UI.ObjectStateFormatter.System.Web.UI.I StateFormatter.Deserialize(String
serializedState)
at System.Web.UI.Util.DeserializeWithAssert(IStateFor matter
formatter, String serializedState)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Web.UI.ViewStateException.ThrowError(Except ion inner,
String persistedState, String errorPageMessage, Boolean
macValidationError)
at System.Web.UI.HiddenFieldPageStatePersister.Load()
at System.Web.UI.Page.LoadPageStateFromPersistenceMed ium()
at System.Web.UI.Page.LoadAllState()
at System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(Http Context
context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at
ASP.youth_articles_authors_rasikaw_blind_eye_aspx. ProcessRequest(HttpContext
context)
at
System.Web.HttpApplication.CallHandlerExecutionSte p.System.Web.HttpApplication.IExecutionStep.Execut e()
at System.Web.HttpApplication.ExecuteStep(IExecutionS tep step,
Boolean& completedSynchronously)

Jun 3 '07 #3

This discussion thread is closed

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