CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $0-$5k | 0.00 |
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.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.3VulDB Meta Temp Score: 8.4
VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Race conditionCWE: CWE-362
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
09/13/2009 🔍10/02/2009 🔍
10/02/2009 🔍
10/02/2009 🔍
10/05/2009 🔍
10/06/2009 🔍
03/18/2015 🔍
01/22/2019 🔍
Sources
Product: freebsd.orgAdvisory: securitytracker.com⛔
Researcher: Przemyslaw Frasunek
Status: Confirmed
CVE: CVE-2009-3527 (🔍)
SecurityTracker: 1022982
SecurityFocus: 36375 - FreeBSD 'kqueue' NULL Pointer Dereference Privilege Escalation Vulnerability
OSVDB: 58544 - FreeBSD kqueues Pipe close() Implementation Race Condition Arbitrary Code Execution
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 03/18/2015 15:15Updated: 01/22/2019 09:24
Changes: 03/18/2015 15:15 (62), 01/22/2019 09:24 (1)
Complete: 🔍
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