National Cyber-Alert System
Vulnerability Summary for CVE-2007-4573
Original release date:09/24/2007
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
- Official Statement from Red Hat (09/27/2007)
-
This issue affected users who were running 64-bit versions of Red Hat Enterprise Linux 3, 4, or 5 on x86_64 architecture. It did not affect users of Red Hat Enterprise Linux 2.1.
Updates are available for Red Hat Enterprise Linux 3, 4, and 5 to correct
this issue. New kernel packages along with our advisory are available at
the URL below as well as via the Red Hat Network. http://rhn.redhat.com/errata/CVE-2007-4573.html
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [linux-kernel] 20070921 Linux 2.6.22.7
Type: Patch Information
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.7
External Source: FULLDISC
Name: 20070924 COSEINC Linux Advisory #2: IA32 System Call
External Source: MLIST
Name: [linux-kernel] 20070921 Re: Linux 2.6.22.7
External Source: FEDORA
Name: FEDORA-2007-712
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-1754
External Source: UBUNTU
Name: USN-518-1
External Source: BID
Name: 25774
External Source: BUGTRAQ
Name: 20070926 Re: COSEINC Linux Advisory #2: IA32 System CallEmulation Vulnerability
External Source: BUGTRAQ
Name: 20070924 COSEINC Linux Advisory #2: IA32 System Call Emulation Vulnerability
External Source: REDHAT
Name: RHSA-2007:0938
External Source: REDHAT
Name: RHSA-2007:0937
External Source: REDHAT
Name: RHSA-2007:0936
External Source: SUSE
Name: SUSE-SA:2007:053
External Source: MANDRIVA
Name: MDVSA-2008:105
External Source: MANDRIVA
Name: MDVSA-2008:008
External Source: MANDRIVA
Name: MDKSA-2007:196
External Source: MANDRIVA
Name: MDKSA-2007:195
External Source: VUPEN
Name: ADV-2007-3246
External Source: DEBIAN
Name: DSA-1504
External Source: DEBIAN
Name: DSA-1381
External Source: DEBIAN
Name: DSA-1378
External Source: SECTRACK
Name: 1018748
External Source: SECUNIA
Name: 29058
External Source: SECUNIA
Name: 27912
External Source: SECUNIA
Name: 27227
External Source: SECUNIA
Name: 27212
External Source: SECUNIA
Name: 26995
External Source: SECUNIA
Name: 26994
External Source: SECUNIA
Name: 26978
External Source: SECUNIA
Name: 26955
External Source: SECUNIA
Name: 26953
External Source: SECUNIA
Name: 26934
External Source: SECUNIA
Name: 26919
External Source: SECUNIA
Name: 26917
External Source: SUSE
Name: SUSE-SA:2007:064
External Source: CONFIRM
Name: http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35.3
External Source: FEDORA
Name: FEDORA-2007-2298