FreeBSD 4.2 UFS/EXT2FS File System race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in FreeBSD 4.2 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component UFS/EXT2FS File System. The manipulation leads to race condition. This vulnerability is referenced as CVE-2001-0371. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in FreeBSD 4.2 (Operating System). It has been rated as critical. This issue affects an unknown part of the component UFS/EXT2FS File System. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Race condition in the UFS and EXT2FS file systems in FreeBSD 4.2 and earlier, and possibly other operating systems, makes deleted data available to user processes before it is zeroed out, which allows a local user to access otherwise restricted information.

The bug was discovered 12/22/2000. The weakness was published 03/22/2001 as not defined advisory (Website). It is possible to read the advisory at archives.neohapsis.com. The identification of this vulnerability is CVE-2001-0371. The exploitation is known to be difficult. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 90 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6268), SecurityFocus (BID 2528†), OSVDB (5682†) and Vulnerability Center (SBV-23307†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.4
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/22/2000 🔍
03/22/2001 +90 days 🔍
03/22/2001 +0 days 🔍
03/22/2001 +0 days 🔍
06/18/2001 +88 days 🔍
04/09/2004 +1025 days 🔍
08/26/2009 +1965 days 🔍
07/04/2014 +1773 days 🔍
02/13/2017 +955 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: archives.neohapsis.com
Status: Not defined

CVE: CVE-2001-0371 (🔍)
GCVE (CVE): GCVE-0-2001-0371
GCVE (VulDB): GCVE-100-16775
X-Force: 6268
SecurityFocus: 2528 - FreeBSD UFS Uncleared Block Data Recovery Vulnerability
OSVDB: 5682 - FreeBSD File System Arbitrary Data Access Race
Vulnerability Center: 23307 - FreeBSD <= 4.2 UFS and EXT2FS File Systems Local Deleted Data Disclosure Vulnerability, Medium

Entryinfo

Created: 07/04/2014 13:05
Updated: 02/13/2017 10:27
Changes: 07/04/2014 13:05 (55), 02/13/2017 10:27 (8)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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