Vulnerability Report

CVE-2009-0343

Title: Niels Provos Systrace

Other

Proof Of Concept

PoC Available for CVE-2009-0343

CWE Category CWE-264

Published Date Jan 29, 2009

Modified Date Jun 16, 2026

Exploit Status Available

Score 7.2 CVSS v2.0

Exploit Probability (EPSS)

0.82%

Vulnerability Summary

CVE-2009-0343: Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes.

Impacted Vendors

systrace 1

niels_provos 1

Reference Links

http://scary.beasts.org/security/CESA-2009-001.html http://scarybeastsecurity.blogspot.com/2009/01/bypassing-syscall-filtering.html http://www.citi.umich.edu/u/provos/systrace/ http://www.securityfocus.com/archive/1/500377/100/0/threaded http://www.securityfocus.com/bid/33417 http://scary.beasts.org/security/CESA-2009-001.html http://scarybeastsecurity.blogspot.com/2009/01/bypassing-syscall-filtering.html http://www.citi.umich.edu/u/provos/systrace/ http://www.securityfocus.com/archive/1/500377/100/0/threaded http://www.securityfocus.com/bid/33417

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-0343 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/32751

View Code

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

January 29, 2009 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.