Apple Mac OS X up to 10.9.3 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Apple Mac OS X up to 10.9.3. The impacted element is an unknown function. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2014-4434. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.9.3 (Operating System). It has been declared as critical. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The kernel in Apple OS X before 10.10 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted filename on an HFS filesystem.

The weakness was published 10/16/2014 by Maksymilian Arciemowicz as HT6535 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2014-4434 since 06/20/2014. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A NULL dereference issue existed in the handling of HFS filenames. A maliciously crafted filesystem may cause an unexpected system shutdown.

A public exploit has been developed by Maksymilian Arciemowicz and been published 2 years after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 78550 (Mac OS X < 10.10 Multiple Vulnerabilities (POODLE) (Shellshock)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks.

Upgrading to version 10.10 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

This issue was addressed by avoiding the NULL dereference.

The vulnerability is also documented in the databases at X-Force (97633), Exploit-DB (38917), Tenable (78550), SecurityFocus (BID 70618†) and SecurityTracker (ID 1031063†). Similar entries are available at VDB-10344, VDB-67593, VDB-67592 and VDB-67590. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Maksymilian Arciemowicz
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78550
Nessus Name: Mac OS X < 10.10 Multiple Vulnerabilities (POODLE) (Shellshock)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Mac OS X 10.10

Timelineinfo

06/20/2014 🔍
10/16/2014 +118 days 🔍
10/16/2014 +0 days 🔍
10/16/2014 +0 days 🔍
10/17/2014 +1 days 🔍
10/17/2014 +0 days 🔍
10/17/2014 +0 days 🔍
10/17/2014 +0 days 🔍
10/19/2014 +2 days 🔍
12/09/2015 +416 days 🔍
12/09/2015 +0 days 🔍
02/23/2022 +2268 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT6535
Researcher: Maksymilian Arciemowicz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-4434 (🔍)
GCVE (CVE): GCVE-0-2014-4434
GCVE (VulDB): GCVE-100-68020
X-Force: 97633
SecurityFocus: 70618 - Apple Mac OS X CVE-2014-4434 HFS Filename Local Denial of Service Vulnerability
SecurityTracker: 1031063 - Apple OS X Multiple Flaws Let Users Execute Arbitrary Code, Obtain Elevated Privileges, Bypass Security Restrictions, and Obtain Potentially Sensitive Information
Vulnerability Center: 46712 - Apple OS X <10.10 Local DoS via a Crafted Filename - CVE-2014-4434, Medium

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 10/17/2014 10:22
Updated: 02/23/2022 12:59
Changes: 10/17/2014 10:22 (69), 06/09/2017 07:28 (18), 02/23/2022 12:59 (3)
Complete: 🔍
Cache ID: 216:112:103

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