Apple Mac OS X up to 10.4 global race condition

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

A vulnerability, which was classified as critical, was found in Apple Mac OS X up to 10.4 (Operating System). Affected is an unknown functionality. The manipulation of the argument global with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and earlier allows local users to cause a denial of service (kernel memory corruption) by simultaneously executing the same HFS_SET_PKG_EXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.

The bug was discovered 03/23/2009. The weakness was released 04/02/2009 by DiGiT with Digit-Labs (Website). The advisory is shared for download at milw0rm.com. This vulnerability is traded as CVE-2009-1238 since 04/02/2009. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (8265). Entries connected to this vulnerability are available at 3959, 47495 and 47494.

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  • end of life

CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.3
VulDB Temp Score: 8.8
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CVSSv2info

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Exploitinginfo

Class: Race condition
CWE: CWE-362
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: no mitigation known
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Timelineinfo

03/23/2009 🔍
03/23/2009 +0 days 🔍
03/23/2009 +0 days 🔍
04/02/2009 +10 days 🔍
04/02/2009 +0 days 🔍
04/02/2009 +0 days 🔍
04/14/2009 +12 days 🔍
05/13/2009 +29 days 🔍
03/17/2015 +2134 days 🔍
09/03/2019 +1631 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: milw0rm.com⛔
Researcher: DiGiT
Organization: Digit-Labs
Status: Not defined

CVE: CVE-2009-1238 (🔍)
Vulnerability Center: 22013 - Apple Mac OS X <= 10.5.6 XNU <=1228.8.20 HFS Vfs Sysctl Interface Local DoS Vulnerability, Medium
SecurityFocus: 34202 - Apple Mac OS X Kernel Memory Multiple Local Information Disclosure Vulnerabilities
Secunia: 34424 - Mac OS X Multiple Vulnerabilities, Moderately Critical
OSVDB: 53334 - CVE-2009-1238 - Apple - Mac OS X - Denial-Of-Service Issue

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

Entryinfo

Created: 03/17/2015 23:38
Updated: 09/03/2019 17:34
Changes: 03/17/2015 23:38 (65), 09/03/2019 17:34 (8)
Complete: 🔍

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