Author Topic: Net Shield False Positives on Yahoo Groups Files URLs  (Read 4521 times)

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Offline TomH

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Net Shield False Positives on Yahoo Groups Files URLs
« on: August 07, 2011, 05:55:57 AM »
With an upgrade in the last 24 hours or so to avast Free 6.0.1203, Network Shield has started blocking access to files on Yahoo Groups. An example message:

Malicious URL blocked

URL:   f1.grp.yahoofs.com/v1/sP89TlM2sINjXK7M3KWCwAH08Hj-qCh0wBnLDetlIe7yomZW6xWLPXNsM3hy7kdNxPgz762UodUkbFOKLyWQB8c2o6bO8g4/ Tables of Contents/all_files_ToC.htm
Process:   file://C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
Infection:   Mal

You have to be a member of a particular group to access the file at that particular URL and the URL will likely change - Yahoo has been randomizing or dynamically encrypting that long middle part for a long time.

I suspect the latest avast update introduced some new rules in Network Shield that are being broken. It's unlikely that overnight Yahoo Groups has become unwittingly reprogrammed to incorporate something malicious in its files URLs.

Until this false detection is fixed, I have to turn Network Shield off in order to use the Files area of any Yahoo Group.

Tom

Offline smiffypr

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #1 on: August 07, 2011, 06:44:49 AM »
I've raised a ticket:
WYQ-362756: All attempts to access files on yahoo groups are blocked

Offline MsAdelle

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #2 on: August 07, 2011, 07:13:21 AM »
Yep its happening to me as well. And others have reported it happening to them.

I encountered it on Safari, Firefox and IE.

Offline cleo

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #3 on: August 07, 2011, 04:18:42 PM »
 The same problem is affecting me too.  I can't download any files from Yahoo.com in IE7 and Google Chrome. 

Offline DavidR

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #4 on: August 07, 2011, 04:24:12 PM »
There is an on-line contact form, http://www.avast.com/contact-form.php?loadStyles for:  * Sales inquiries; Technical issues; Website issues; Report false virus alert in file; Report false virus alert on website; Press (Media), issues.

- If you are reporting an FP, then you get another input field open, click Browse button and navigate to the file or enter the web URL for the URL you wish to submit for review, etc.
Windows 10 Home 2004 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 20.9.2437 (build 20.9.5758.0) UI-1.0.579/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline bfotk

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #5 on: August 07, 2011, 07:28:51 PM »
Add me to the list of people who are encountering this Avast! vs Yahoo! issue.


Offline TomH

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #6 on: August 07, 2011, 08:29:47 PM »
Thanks, DavidR. I posted a ticket before posting to the forum. If volume of tickets affects priority of attention, woul all others with this problem also submit tickets, please?

Tom

Offline WhatTheHeck

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #7 on: August 07, 2011, 09:03:24 PM »
+1  Can't get to my Y! Group files. 
Ticket entered. 

Offline Mike23

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #8 on: August 07, 2011, 09:56:51 PM »
Hi,
Yes. Add me to the list as well please.

Affecting all the File types on my Yahoo Groups site.
Cannot D/L a thing.

I have submitted a ticket.

Thanks, Mike..
Win-7-HP/Intel® DualCore-2.0GHz/500G HDD/4 Gig Ram/550Watt PSU/350WattUPS/Firefox-20.0/62.0/70.0/T-bird-2.0.0.24/SnagIt-v10.0.1/MWP-7.12.0.
(Always choose the CUSTOM Install.)

Offline smiffypr

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #9 on: August 08, 2011, 07:12:42 AM »
Fixed now.


Offline Mike23

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Re: Net Shield False Positives on Yahoo Groups Files URLs
« Reply #10 on: August 08, 2011, 11:50:01 AM »
Ahhh. Thank you.  :)

Yahoo is fully functional again.

Regs, Mike..
Win-7-HP/Intel® DualCore-2.0GHz/500G HDD/4 Gig Ram/550Watt PSU/350WattUPS/Firefox-20.0/62.0/70.0/T-bird-2.0.0.24/SnagIt-v10.0.1/MWP-7.12.0.
(Always choose the CUSTOM Install.)