Opened 3 weeks ago

Last modified 3 days ago

#25112 assigned defect

Tor Browser 7.5 is not working on Windows Vista 64bit

Reported by: gk Owned by: pospeselr
Priority: High Milestone:
Component: Applications/Tor Browser Version:
Severity: Major Keywords: ff60-esr-will-have, TorBrowserTeam201802
Cc: jllover, arthuredelstein, mcs, tbb-team Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

We have some users on the blog complaining about Tor Browser 7.5 being broken on Windows Vista 64bit. See, for instance:https://blog.torproject.org/comment/273815#comment-273815

The error ("TypeError: frameLoader.tabParent is null") might indicate that our enabled sandboxing is breaking things for them.

Child Tickets

Attachments (1)

0001-Bug-25112-Tor-Browser-7.5-is-not-working-on-Windows-.patch (3.7 KB) - added by pospeselr 30 hours ago.
disables sandbox on Vista and below when in wow64 scenario

Download all attachments as: .zip

Change History (16)

comment:1 Changed 3 weeks ago by gk

FWIW: Windows Vista is EOL for almost a year now. Might still be worth trying to understand what the issue is and fixing it if it is easy.

comment:2 Changed 3 weeks ago by arma

#25130 also got closed as a duplicate.

comment:3 Changed 3 weeks ago by gk

Cc: jllover added
Priority: MediumHigh
Severity: NormalMajor

#25130 is a duplicate.

jllover: I assume this issue shows up due to us enabling sandboxing support for Windows with 7.5. Alas, this did not get caught in our testing and seems to be only affecting Windows Vista which is not supported anymore from Microsoft.

Not sure if you still can open new tabs but if so, open one and enter about:config in the URL bar and then you can test whether disabling the sandbox solves the issue for you by setting security.sandbox.content.level to 0.

comment:4 Changed 3 weeks ago by arthuredelstein

Cc: arthuredelstein added

comment:5 Changed 3 weeks ago by pospeselr

Owner: changed from tbb-team to pospeselr
Status: newassigned

comment:6 Changed 3 weeks ago by mcs

Cc: mcs added

comment:7 Changed 3 weeks ago by pospeselr

Was able to reproduce on a Vista 64-bit SP2 VM this afternoon and also confirmed the issue does not occur on 32-bit. Setting sandbox content level to 0 'fixes' the issue.

comment:8 Changed 3 weeks ago by gk

Keywords: TorBrowserTeam201802 added

comment:9 Changed 4 days ago by cypherpunks

Status: assignedneeds_information

Vista is vulnerable without security patches. Why are you wasting your resources on it?

comment:10 in reply to:  9 Changed 3 days ago by cypherpunks

Status: needs_informationassigned

Replying to cypherpunks:

Vista is vulnerable without security patches. Why are you wasting your resources on it?

But the current ESR of Firefox still supports Vista and XP, which means that TB should support them as well as ditch them when Firefox ditches them (i.e. this next ESR).

comment:11 Changed 3 days ago by pospeselr

This failure happens due to a missing wow_helper.exe in the TBB package. Everything works just fine when I copy over the version packaged with latest Firefox. Currently investigating why this exe isn't being built or packaged.

An interesting sidenote, the latest Chromium sandbox code no longer uses wow_helper.exe. Seems like it was removed in Chromium commit 1812d0d777dbe2162e88f6a0a205c8b483008626 as part of removing support for XP and Vista.

comment:12 in reply to:  11 Changed 3 days ago by cypherpunks

Status: assignedneeds_information

Replying to pospeselr:

This failure happens due to a missing wow_helper.exe in the TBB package.

They didn't tell you?

Everything works just fine when I copy over the version packaged with latest Firefox.

What do you mean? It was removed as part of removing support for Vista.

Currently investigating why this exe isn't being built or packaged.

The same way why helper.exe isn't being built, and then they wonder why staged updates don't work.

An interesting sidenote, the latest Chromium sandbox code no longer uses wow_helper.exe. Seems like it was removed in Chromium commit 1812d0d777dbe2162e88f6a0a205c8b483008626 as part of removing support for XP and Vista.

It was needed for Vista only.

comment:13 Changed 3 days ago by gk

So, FWIW, we are hitting essentially https://bugzilla.mozilla.org/show_bug.cgi?id=1110760.

comment:14 Changed 3 days ago by gk

Status: needs_informationassigned

comment:15 Changed 3 days ago by boklm

Cc: tbb-team added

Changed 30 hours ago by pospeselr

disables sandbox on Vista and below when in wow64 scenario

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