883165 - (CVE-2013-1715) Medium integrity DLL Hijacking - Firefox Full installer and Stub installer

Status: VERIFIED FIXED

(Firefox :: Installer, defect)

Description

[Robert Strong (they/them - no direct email)]

+++ This bug was initially created as a clone of Bug #811557 which was initially created as a clone of Bug #792106 +++

Specifically (from bug 811557 comment #42)
Windows 8 x64:
C:\Windows\SysWOW64\oleacc.dll <- CMD.EXE was launched in MEDIUM integrity

Windows XP Pro SP2 x64:
C:\WINDOWS\SysWOW64\apphelp.dll <- Several CMD.EXE where launched (not sure what integrity level)

Full results are being added here as we test:
https://intranet.mozilla.org/User:[e-mail]/DLL_Hijacking

Comment 1

[Robert Strong (they/them - no direct email)]

Attachment: patch rev1 - oleacc.dll and apphelp.dll

Comment 2

[Brian R. Bondy [:bbondy]]

Comment on attachment 762724 [details] [diff] [review]
patch rev1 - oleacc.dll and apphelp.dll

Review of attachment 762724 [details] [diff] [review]:
-----------------------------------------------------------------

We need another patch with a new sfx too

Comment 3

[Robert Strong (they/them - no direct email)]

Yep, I'll create one today

Comment 4

[Robert Strong (they/them - no direct email)]

Attachment: new 7zip sfx

Brian, could you verify that I got the version and manifest correct? Thanks!

Comment 5

[Robert Strong (they/them - no direct email)]

Changing from sec-high to sec-moderate since this is for medium integrity dll's

Comment 6

[Robert Strong (they/them - no direct email)]

Pushed to mozilla-inbound
https://hg.mozilla.org/integration/mozilla-inbound/rev/1393fe579803

Comment 7

[Justin Wood (:Callek)]

This will also need a comm-central/ patch (likely in a new bug) for TB and SeaMonkey

https://hg.mozilla.org/comm-central/file/788084ca950a/other-licenses/7zstub

Comment 8

[Robert Strong (they/them - no direct email)]

(In reply to Justin Wood (:Callek) from comment #7)
> This will also need a comm-central/ patch (likely in a new bug) for TB and
> SeaMonkey
> 
> https://hg.mozilla.org/comm-central/file/788084ca950a/other-licenses/7zstub
If you file the bug I'll submit the patch.

Comment 9

[Justin Wood (:Callek)]

(In reply to Robert Strong [:rstrong] (do not email) from comment #8)
> (In reply to Justin Wood (:Callek) from comment #7)
> > This will also need a comm-central/ patch (likely in a new bug) for TB and
> > SeaMonkey
> > 
> > https://hg.mozilla.org/comm-central/file/788084ca950a/other-licenses/7zstub
> If you file the bug I'll submit the patch.

Bug 883322

Comment 10

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/1393fe579803

Comment 11

[Robert Strong (they/them - no direct email)]

Kamil, could you verify the two dll's that have been added? Thanks!

Comment 12

[Robert Strong (they/them - no direct email)]

Comment on attachment 762724 [details] [diff] [review]
patch rev1 - oleacc.dll and apphelp.dll

For both patches

[Approval Request Comment]
Bug caused by (feature/regressing bug #): This has been around since we have had Firefox installers.
User impact if declined: possibility of launching a process in the user's security context.
Testing completed (on m-c, etc.): has baked for a few days on m-c. This only adds 2 dll's to the existing dll's to preload and this code has been in use for some time now.
Risk to taking this patch (and alternatives if risky): minimal
String or IDL/UUID changes made by this patch: none

Comment 13

[Robert Strong (they/them - no direct email)]

Pushed combined patch to mozilla-aurora
https://hg.mozilla.org/releases/mozilla-aurora/rev/3f7234d9c1d9

Note: this affects the full installer as well so adding affected to esr as well.

Comment 14

[Kamil Jozwiak [:kjozwiak]]

Firefox 23 Testing/Verification Results:

Tested the issue using the full installer & stub executable from the following build:
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2013-06-18-00-40-18-mozilla-aurora/

Windows 8 x64:

C:\Windows\SysWOW64\oleacc.dll <- Passed (cmd.exe was not executed)

- Went through both FULL & Stub installers

Windows XP Pro SP2 x64:

C:\WINDOWS\SysWOW64\apphelp.dll <- Passed (cmd.exe was not executed)

- Went through both FULL & STUB installers

Comment 15

[Robert Strong (they/them - no direct email)]

Thanks Kamil!

Comment 16

[Kamil Jozwiak [:kjozwiak]]

Firefox 24 Testing/Verification Results:

Tested the issue using the full installer & stub executable from the following build:
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2013-06-18-03-13-35-mozilla-central/

Windows 8 x64:

C:\Windows\SysWOW64\oleacc.dll <- Passed (cmd.exe was not executed)

- Went through both the FULL & STUB installers

Windows XP Pro SP2 x64:

C:\WINDOWS\SysWOW64\apphelp.dll <- Passed (cmd.exe was not executed)

- Went through both FULL & STUB installers

Comment 17

[Kamil Jozwiak [:kjozwiak]]

(In reply to Robert Strong [:rstrong] (do not email) from comment #15)
> Thanks Kamil!

no worries! I accidentally selected the incorrect build to mark as verified so the "Verified" messages are switched but tested both and everything works without any issues.