CVE-2017-0108 : Detail

CVE-2017-0108

7.8
/
High
Overflow
20.34%V3
Local
2017-03-16
23h00 +00:00
2017-08-15
07h57 +00:00
CVE.org
NVD
Notifications for a CVE
Stay informed of any changes for a specific CVE.
Notifications manage

CVE Descriptions

The Windows Graphics Component in Microsoft Office 2007 SP3; 2010 SP2; and Word Viewer; Skype for Business 2016; Lync 2013 SP1; Lync 2010; Live Meeting 2007; Silverlight 5; Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Graphics Component Remote Code Execution Vulnerability." This vulnerability is different from that described in CVE-2017-0014.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-119 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.

Metrics

Metrics Score Severity CVSS Vector Source
V3.0 7.8 HIGH CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Local

A vulnerability exploitable with Local access means that the vulnerable component is not bound to the network stack, and the attacker's path is via read/write/execute capabilities. In some cases, the attacker may be logged in locally in order to exploit the vulnerability, otherwise, she may rely on User Interaction to execute a malicious file.

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

Required

Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Unchanged

An exploited vulnerability can only affect resources managed by the same authority. In this case the vulnerable component and the impacted component are the same.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

 [email protected]
V2 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 41647

Publication date : 2017-03-19 23h00 +00:00
Author : Google Security Research
EDB Verified : Yes

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1022 We have encountered a crash in the Windows Uniscribe user-mode library, in the memmove() function called by USP10!otlList::insertAt, while trying to display text using a corrupted font file: --- (4b44.24a8): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=093bc154 ebx=0943c104 ecx=00000012 edx=00000000 esi=093bc10c edi=0943c104 eip=76bc9f40 esp=001ee9b4 ebp=001ee9bc iopl=0 nv up ei pl nz ac pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010216 msvcrt!memmove+0x5a: 76bc9f40 f3a5 rep movs dword ptr es:[edi],dword ptr [esi] 0:000> kb ChildEBP RetAddr Args to Child 001ee9bc 7522e87a 0943c104 093bc10c 00000048 msvcrt!memmove+0x5a 001ee9dc 752358bd 00000002 ffffffff 00000001 USP10!otlList::insertAt+0x3a 001ee9f8 7523a414 001eee10 001eee34 00000002 USP10!InsertGlyphs+0x1d 001eea3c 75239676 001eee10 001eee34 001eed24 USP10!SubstituteNtoM+0x224 001eea7c 75231393 001eee10 001eee34 001eed24 USP10!otlMultiSubstLookup::apply+0xf6 001eeae0 752335e1 00000000 001eee10 001eee34 USP10!ApplyLookup+0x183 001eece4 7522f29f 42555347 001eee4c 001eee10 USP10!ApplyFeatures+0x481 001eed30 7522f710 00000000 093da000 093d9b58 USP10!SubstituteOtlGlyphs+0x1bf 001eed6c 752213c0 001eede8 001eee20 001eee4c USP10!SubstituteOtlChars+0x220 001eefe8 7521548a 001ef0f4 001ef120 001ef108 USP10!HebrewEngineGetGlyphs+0x690 001ef0a8 7521253f 001ef0f4 001ef120 001ef108 USP10!ShapingGetGlyphs+0x36a 001ef190 751e5c6f 86011dce 093b6124 093b6318 USP10!ShlShape+0x2ef 001ef1d4 751f167a 86011dce 093b6124 093b6318 USP10!ScriptShape+0x15f 001ef234 751f2b14 00000000 00000000 001ef2b4 USP10!RenderItemNoFallback+0xfa 001ef260 751f2da2 00000000 00000000 001ef2b4 USP10!RenderItemWithFallback+0x104 001ef284 751f4339 00000000 001ef2b4 093b6124 USP10!RenderItem+0x22 001ef2c8 751e7a04 000004a0 00000400 86011dce USP10!ScriptStringAnalyzeGlyphs+0x1e9 001ef2e0 76ca5465 86011dce 093b6040 0000000a USP10!ScriptStringAnalyse+0x284 001ef32c 76ca5172 86011dce 001ef714 0000000a LPK!LpkStringAnalyse+0xe5 001ef428 76ca1410 86011dce 00000000 00000000 LPK!LpkCharsetDraw+0x332 001ef45c 763c18b0 86011dce 00000000 00000000 LPK!LpkDrawTextEx+0x40 001ef49c 763c22bf 86011dce 00000058 00000000 USER32!DT_DrawStr+0x13c 001ef4e8 763c21f2 86011dce 001ef714 001ef728 USER32!DT_GetLineBreak+0x78 001ef594 763c14d4 86011dce 00000000 0000000a USER32!DrawTextExWorker+0x255 001ef5b8 763c2475 86011dce 001ef714 ffffffff USER32!DrawTextExW+0x1e 001ef5ec 013abcec 86011dce 001ef714 ffffffff USER32!DrawTextW+0x4d [...] 0:000> dd esi 093bc10c 00000b45 00010001 00000b46 00010002 093bc11c 00000b47 00010003 00000b48 00010004 093bc12c 00000b49 00010005 00000b4a 00010006 093bc13c 00000b4b 00010007 00000b4c 00010008 093bc14c 00000b4d 00010009 000b0000 67696c63 093bc15c 00000001 000b0000 00000001 000000f8 093bc16c 00000048 001104bd 00010000 00000b26 093bc17c 00010001 00000b27 00010002 00000b28 0:000> dd edi 0943c104 ???????? ???????? ???????? ???????? 0943c114 ???????? ???????? ???????? ???????? 0943c124 ???????? ???????? ???????? ???????? 0943c134 ???????? ???????? ???????? ???????? 0943c144 ???????? ???????? ???????? ???????? 0943c154 ???????? ???????? ???????? ???????? 0943c164 ???????? ???????? ???????? ???????? 0943c174 ???????? ???????? ???????? ???????? --- The issue reproduces on Windows 7. It is easiest to reproduce with PageHeap enabled, but it is also possible to observe a crash in a default system configuration. In order to reproduce the problem with the provided samples, it might be necessary to use a custom program which displays all of the font's glyphs at various point sizes. Attached is an archive with 3 crashing samples. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/41647.zip

Products Mentioned

Configuraton 0

Microsoft>>Live_meeting >> Version 2007

Microsoft>>Lync >> Version 2010

Microsoft>>Lync >> Version 2013

Microsoft>>Office >> Version 2007

Microsoft>>Office >> Version 2010

Microsoft>>Silverlight >> Version 5.0

Microsoft>>Skype_for_business >> Version 2016

Microsoft>>Word_viewer >> Version -

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_server_2008 >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_vista >> Version -

References

http://www.securityfocus.com/bid/96722
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id/1038002
Tags : vdb-entry, x_refsource_SECTRACK
https://www.exploit-db.com/exploits/41647/
Tags : exploit, x_refsource_EXPLOIT-DB