Bug 487990 (CVE-2009-0834) - CVE-2009-0834 kernel: x86-64: syscall-audit: 32/64 syscall hole
Summary: CVE-2009-0834 kernel: x86-64: syscall-audit: 32/64 syscall hole
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2009-0834
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 487997 487998 487999 488000 488001 488002 549238
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-03-02 04:11 UTC by Eugene Teo (Security Response)
Modified: 2019-09-29 12:28 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-06-10 22:28:32 UTC
Embargoed:

Attachments (Terms of Use)
RHEL5 patch for audit case (vs kernel-2.6.18-132.el5) (1.30 KB, application/octet-stream)
2009-03-02 04:39 UTC, Eugene Teo (Security Response) 		no flags Details
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:0451 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2009-04-29 09:28:23 UTC
Red Hat Product Errata RHSA-2009:0459 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2009-04-30 21:24:29 UTC
Red Hat Product Errata RHSA-2009:0473 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2009-05-07 10:53:11 UTC
Red Hat Product Errata RHSA-2010:0079 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-02-02 21:01:07 UTC

Description Eugene Teo (Security Response) 2009-03-02 04:11:30 UTC 
Description of problem:
On x86-64, a 32-bit process (TIF_IA32) can switch to 64-bit mode with ljmp, and then use the "syscall" instruction to make a 64-bit system call.  A 64-bit process make a 32-bit system call with int $0x80.

In both these cases, audit_syscall_entry() will use the wrong system call number table and the wrong system call argument registers.  This could be used to circumvent a syscall audit configuration that filters based on the syscall numbers or argument details.

References:
http://scary.beasts.org/security/CESA-2009-001.html
http://scary.beasts.org/security/CESA-2009-004.html
https://bugzilla.redhat.com/show_bug.cgi?id=487255
http://lkml.org/lkml/2009/2/27/451 summary
http://lkml.org/lkml/2009/2/27/452 syscall-audit
Comment 2 Eugene Teo (Security Response) 2009-03-02 04:39:00 UTC 
Created attachment 333681 [details]
RHEL5 patch for audit case (vs kernel-2.6.18-132.el5)
Comment 5 Eugene Teo (Security Response) 2009-03-19 04:15:25 UTC 
CVSS2 score of low, 3.6 (AV:L/AC:L/Au:N/C:P/I:P/A:N)
Comment 6 Eugene Teo (Security Response) 2009-04-14 02:50:45 UTC 
Upstream patch:
http://git.kernel.org/linus/ccbe495caa5e604b04d5a31d7459a6f6a76a756c
Comment 7 errata-xmlrpc 2009-04-29 09:28:30 UTC 
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2009:0451 https://rhn.redhat.com/errata/RHSA-2009-0451.html
Comment 8 errata-xmlrpc 2009-04-30 21:24:58 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4

Via RHSA-2009:0459 https://rhn.redhat.com/errata/RHSA-2009-0459.html
Comment 9 errata-xmlrpc 2009-05-07 10:53:15 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2009:0473 https://rhn.redhat.com/errata/RHSA-2009-0473.html
Comment 11 errata-xmlrpc 2010-02-02 21:01:38 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.2 Z Stream

Via RHSA-2010:0079 https://rhn.redhat.com/errata/RHSA-2010-0079.html
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