English
Français
Light
Dark
System

Alert System

Stay informed at all times
Create an account Open a free account Login Manage your alerts

CVE-2016-0120 : Detail

CVE-2016-0120

6.5
/
MEDIUM
A03-Injection
8.73%V3
Network
2016-03-09 10:00 +00:00
2018-10-12 17:57 +00:00
CVE.org
NVD

Alert for a CVE

Stay informed of any changes for a specific CVE.
Alert management

Descriptions

The Adobe Type Manager Library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allows remote attackers to cause a denial of service (system hang) via a crafted OpenType font, aka "OpenType Font Parsing Vulnerability."

Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Metrics

Metric Score Severity CVSS Vector Source
V3.0 6.5 MEDIUM CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

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.

None

There is no loss of confidentiality within the impacted component.

Integrity Impact

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

None

There is no loss of integrity within 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

 nvd@nist.gov
V2 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C nvd@nist.gov

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 : 39561

Publication date : 2016-03-13 23:00 +00:00
Author : Google Security Research
EDB Verified : Yes

Source: https://code.google.com/p/google-security-research/issues/detail?id=682 We have encountered a Windows kernel crash in the ATMFD.DLL OpenType driver while processing a corrupted OTF font file: --- DRIVER_OVERRAN_STACK_BUFFER (f7) A driver has overrun a stack-based buffer. This overrun could potentially allow a malicious user to gain control of this machine. DESCRIPTION A driver overran a stack-based buffer (or local variable) in a way that would have overwritten the function's return address and jumped back to an arbitrary address when the function returned. This is the classic "buffer overrun" hacking attack and the system has been brought down to prevent a malicious user from gaining complete control of it. Do a kb to get a stack backtrace -- the last routine on the stack before the buffer overrun handlers and bugcheck call is the one that overran its local variable(s). Arguments: Arg1: a6703535, Actual security check cookie from the stack Arg2: 98ee9e09, Expected security check cookie Arg3: 671161f6, Complement of the expected security check cookie Arg4: 00000000, zero Debugging Details: ------------------ DEFAULT_BUCKET_ID: VERIFIER_ENABLED_VISTA_MINIDUMP SECURITY_COOKIE: Expected 98ee9e09 found a6703535 CUSTOMER_CRASH_COUNT: 1 BUGCHECK_STR: 0xF7 PROCESS_NAME: csrss.exe CURRENT_IRQL: 0 ANALYSIS_VERSION: 6.3.9600.17237 (debuggers(dbg).140716-0327) x86fre LAST_CONTROL_TRANSFER: from 98ea5720 to 82725b84 STACK_TEXT: a6723488 98ea5720 000000f7 a6703535 98ee9e09 nt!KeBugCheckEx+0x1e WARNING: Stack unwind information not available. Following frames may be wrong. a67234a8 98ec57f6 00000085 00400000 08680370 ATMFD+0x15720 a672353c 98ec5b0e 00400000 a6723790 00400000 ATMFD+0x357f6 a6723610 8297ef90 ff68a000 00000000 ff68a000 ATMFD+0x35b0e a6723624 99180853 3e9ca839 a6723734 98ec5063 nt!VerifierExFreePoolWithTag+0x30 a6723638 00400000 a672364c a6723790 a6723868 win32k!VerifierEngFreeMem+0x5b a6723790 98e95328 98e953b4 98e953be 98e95442 0x400000 a67237c8 00000000 00001f98 00000000 00000000 ATMFD+0x5328 --- While we have not determined the specific root cause of the vulnerability, we have pinpointed the offending mutations to reside in the "CFF " table. The immediate reason of the bugcheck is a stack corruption detected by the stack cookie protection (/GS). The issue reproduces on Windows 7 and 8.1; other platforms were not tested. In our environment, it is sufficient to open the offending font in the default Windows Font Viewer to reproduce the crash, or even click on a folder icon containing the font in Windows Explorer. Attached is an archive with the proof-of-concept mutated OTF file, together with the original font used to generate it and a corresponding crash log from Windows 7 32-bit. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39561.zip

Products Mentioned

Configuraton 0

Microsoft>>Windows_10 >> Version -

Microsoft>>Windows_10 >> Version 1511

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_8.1 >> Version -

Microsoft>>Windows_rt_8.1 >> Version -

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_server_2012 >> Version -

Microsoft>>Windows_server_2012 >> Version r2

Microsoft>>Windows_vista >> Version -

References

http://www.securitytracker.com/id/1035198
Tags : vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/84071
Tags : vdb-entry, x_refsource_BID
https://www.exploit-db.com/exploits/39561/
Tags : exploit, x_refsource_EXPLOIT-DB

More information
Click on the button to the left (OFF), to authorize the inscription of cookie improving the functionalities of the site. Click on the button to the left (Accept all), to unauthorize the inscription of cookie improving the functionalities of the site.