CVE-2009-0343

Niels Provos Systrace <1.6f - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-0343. PoCs published by Chris Evans.

AI-analyzed exploit summary This exploit leverages a local privilege escalation vulnerability in Systrace by making a syscall that bypasses access control restrictions. The code uses inline assembly to invoke syscall 1 (exit on i386, write on x86_64), exploiting a flaw in Systrace's policy enforcement.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Chris Evans · clocallinux_x86-64
https://www.exploit-db.com/exploits/32751

This exploit leverages a local privilege escalation vulnerability in Systrace by making a syscall that bypasses access control restrictions. The code uses inline assembly to invoke syscall 1 (exit on i386, write on x86_64), exploiting a flaw in Systrace's policy enforcement.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Trivial
Reliability
Reliable
Target: Systrace versions prior to 1.6f
No auth needed
Prerequisites: Local access to the target system · Systrace installed and running with vulnerable version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Various Sources x_refsource_misc
http://www.citi.umich.edu/u/provos/systrace/
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/33417
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/500377/100/0/threaded

Scores

EPSS 0.0082
EPSS Percentile 52.2%

Details

CWE
CWE-264
Status published
Products (11)
niels_provos/systrace 1.1
niels_provos/systrace 1.2
niels_provos/systrace 1.3
niels_provos/systrace 1.4
niels_provos/systrace 1.5
niels_provos/systrace 1.6
niels_provos/systrace 1.6a
niels_provos/systrace 1.6b
niels_provos/systrace 1.6c
niels_provos/systrace 1.6d
... and 1 more
Published Jan 29, 2009
Tracked Since Feb 18, 2026