Vulnerability CVE-2009-0343
Published: 2009-01-29   Modified: 2012-02-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
High
Problems with syscall filtering technologies on Linux
Chris Evans
01.02.2009

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Niels provos -> Systrace 

 References:
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
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