FreeBSD 6.3/6.4 close race condition

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in FreeBSD 6.3/6.4. Affected by this issue is the function close. The manipulation results in race condition. This vulnerability is known as CVE-2009-3527. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in FreeBSD 6.3/6.4 (Operating System). It has been classified as critical. Affected is the function close. The manipulation 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 Pipe (IPC) close function in FreeBSD 6.3 and 6.4 allows local users to cause a denial of service (crash) or gain privileges via vectors related to kqueues, which triggers a use after free, leading to a NULL pointer dereference or memory corruption.

The weakness was published 10/02/2009 by Przemyslaw Frasunek (Website). The advisory is available at securitytracker.com. This vulnerability is traded as CVE-2009-3527 since 10/02/2009. Local access is required to approach this attack. 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. As 0-day the estimated underground price was around $25k-$100k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (9859), SecurityFocus (BID 36375†), OSVDB (58544†) and SecurityTracker (ID 1022982†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/13/2009 🔍
10/02/2009 +19 days 🔍
10/02/2009 +0 days 🔍
10/02/2009 +0 days 🔍
10/05/2009 +3 days 🔍
10/06/2009 +0 days 🔍
03/18/2015 +1989 days 🔍
09/15/2024 +3469 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: securitytracker.com⛔
Researcher: Przemyslaw Frasunek
Status: Confirmed

CVE: CVE-2009-3527 (🔍)
GCVE (CVE): GCVE-0-2009-3527
GCVE (VulDB): GCVE-100-50370
SecurityFocus: 36375 - FreeBSD 'kqueue' NULL Pointer Dereference Privilege Escalation Vulnerability
OSVDB: 58544 - FreeBSD kqueues Pipe close() Implementation Race Condition Arbitrary Code Execution
SecurityTracker: 1022982

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/18/2015 15:15
Updated: 09/15/2024 16:20
Changes: 03/18/2015 15:15 (62), 01/22/2019 09:24 (1), 09/15/2024 16:20 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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