MSIE 9 IEFRAME CMarkup­Pointer::Move­To­Gap use-after-free

Since November I have been releasing details on all vulnerabilities I
found that I have not released before. This is the 33rd entry in the
series. This information is available in more detail on my blog at
http://blog.skylined.nl/20161215001.html. There you can find a repro
that triggered this issue in addition to the information below.

If you find these releases useful, and would like to help me make time
to continue releasing this kind of information, you can make a donation
in bitcoin to 183yyxa9s1s1f7JBp­PHPmz­Q346y91Rx5DX.

Follow me on http://twitter.com/berendjanwever for daily browser bugs.

MSIE 9 IEFRAME CMarkupPointer::MoveToGap use-after-free
==============================
=========================
(The fix and CVE number for this issue are not known)

Synopsis
--------
A specially crafted web-page can trigger a use-after-free vulnerability
in Microsoft Internet Explorer 9. The use appears to happen only once
almost immediately after the free, which makes practical exploitation
unlikely.

Known affected software and attack vectors
------------------------------------------
* Microsoft Internet Explorer 9

  An attacker would need to get a target user to open a specially
  crafted web-page. Disabling JavaScript should prevent an attacker
  from triggering the vulnerable code path.

Details
-------
It appears there is an implementation bug in the `splitText` method of
`CDATASection` (Text) objects in SVG. `splitText` should split a `Text`
node into two `Text` nodes, by creating a new `Text` node and moving
some of the text data from the original node to the new node. After
this, each node contains a sub-string of the original text.

The bug can be triggered by calling this method with zero as the index
argument on a `CDATASection` which contains some text. In this case, the
code will return a new `Text` node that contains the entire text but it
does not remove the text from the original node. I am speculating that
this causes an additional reference to the test data without increasing
its reference counter. This failure to increase the reference counter
can cause this reference counter to drop to zero before all references
are destroyed.

Time-line
---------
* Unknown date: This vulnerability was found through fuzzing.
* 12 December 2012: This vulnerability was submitted to EIP.
* 21 January 2013: This vulnerability was rejected by EIP.
* Unknown date: This vulnerability was address by Microsoft.
* 15 December 2016: Details of this vulnerability are released.

Cheers,

SkyLined

CVE-2013-0090: MSIE 9 IEFRAME CView::EnsureSize use-after-free

Since November I have been releasing details on all vulnerabilities I
found that I have not released before. This is the 34th entry in the
series. This information is available in more detail on my blog at
http://blog.skylined.nl/20161216001.html. There you can find a repro
that triggered this issue in addition to the information below.

If you find these releases useful, and would like to help me make time
to continue releasing this kind of information, you can make a donation
in bitcoin to 183yyxa9s1s1f7JBp­PHPmz­Q346y91Rx5DX.

Follow me on http://twitter.com/berendjanwever for daily browser bugs.

MSIE 9 IEFRAME CView::EnsureSize use-after-free
==============================
=================
(MS13-021, CVE-2013-0090)

Synopsis
--------
A specially crafted web-page can trigger a use-after-free vulnerability
in Microsoft Internet Explorer 9. I did not investigate this
vulnerability thoroughly, so I cannot speculate on the potential impact
or exploitability.

Known affected software and attack vectors
------------------------------------------
* Microsoft Internet Explorer 9

  An attacker would need to get a target user to open a specially
  crafted web-page. Disabling JavaScript should prevent an attacker
  from triggering the vulnerable code path.

Details
-------
This bug was found back when I had very little knowledge and tools to do
analysis on use-after-free bugs, so I have no details to share. ZDI
revealed that this was a use-after-free vulnerability in their advisory
at http://www.zerodayinitiative.com/advisories/ZDI-13-097/.

Time-line
---------
* Sometime in October 2012: This vulnerability was found through
  fuzzing.
* 29 October 2012: This vulnerability was submitted to EIP.
* 27 November 2013: This vulnerability was rejected by EIP.
* 14 January 2013: This vulnerability was submitted to ZDI.
* 6 February 2013: This vulnerability was acquired by ZDI.
* 13 February 2013: This vulnerability was disclosed to Microsoft by
  ZDI.
* 29 May 2013: This vulnerability was address by Microsoft in MS13-021.
* 14 December 2016: Details of this vulnerability are released.

Cheers,

SkyLined

CVE-2016-9277,CVE-2016-9966,CVE-2016-9967: Possible Privilege Escalation in telecom

Description of the potential vulnerability:Lack of appropriate exception handling in some receivers of the Telecom application allows attackers crash the system easily resulting in a possible DoS attack
Affected versions: L(5.0/5.1), M(6.0)
Disclosure status: Privately disclosed.
The patch prevents system crashes by handling unexpected exceptions.

Fix:
http://security.samsungmobile.com/smrupdate.html#SMR-DEC-2016
SVE-2016-7119, SVE-2016-7120, and SVE-2016-7121: Possible Privilege Escalation in telecom

Sincerely,

Ant-financial Light-Year Security Lab