Vulnerability CVE-2010-3301
Published: 2010-09-22   Modified: 2012-02-13

Description:
The IA32 system call emulation functionality in arch/x86/ia32/ia32entry.S in the Linux kernel before 2.6.36-rc4-git2 on the x86_64 platform does not zero extend the %eax register after the 32-bit entry path to ptrace is used, which allows local users to gain privileges by triggering an out-of-bounds access to the system call table using the %rax register. NOTE: this vulnerability exists because of a CVE-2007-4573 regression.

See advisories in our WLB2 database:
Topic
Author
Date
High
x86_64 Linux Kernel ia32syscall Emulation Privilege Escalation
ben hawkes
23.09.2010
High
linux kernel 2.6.35.4 64 Linux Kernel ia32syscall Emulation Privilege Escalation
ben hawkes
25.09.2010

Type:

CWE-DesignError

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
Linux -> Kernel 

 References:
http://sota.gen.nz/compat2/
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=eefdca043e8391dcd719711716492063030b55ac
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=36d001c70d8a0144ac1d038f6876c484849a74de
https://bugzilla.redhat.com/show_bug.cgi?id=634449
http://www.vupen.com/english/advisories/2011/0298
http://www.vupen.com/english/advisories/2011/0070
http://www.vupen.com/english/advisories/2010/3117
http://www.ubuntu.com/usn/USN-1041-1
http://www.redhat.com/support/errata/RHSA-2010-0842.html
http://www.openwall.com/lists/oss-security/2010/09/16/3
http://www.openwall.com/lists/oss-security/2010/09/16/1
http://www.mandriva.com/security/advisories?name=MDVSA-2010:247
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
http://secunia.com/advisories/42758
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
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