CVE-2007-3731 Detail

Current Description

The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
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Base Score:  N/A
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Vendor Statements (disclaimer)

Official Statement fromRed Hat (10/18/2007)

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://bugzilla.kernel.org/show_bug.cgi?id=8765 Exploit 
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=29eb51101c02df517ca64ec472d7501127ad1da8
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a10d9a71bafd3a283da240d2868e71346d2aef6f
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0094
http://www.debian.org/security/2007/dsa-1378
http://www.redhat.com/support/errata/RHSA-2007-0940.html
http://www.securityfocus.com/archive/1/488972/100/0/threaded
http://www.securityfocus.com/bid/25801
http://www.ubuntu.com/usn/usn-518-1
https://bugzilla.redhat.com/show_bug.cgi?id=248324 Patch 
https://issues.rpath.com/browse/RPL-2304
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10394

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2007-3731
NVD Published Date:
09/17/2007
NVD Last Modified:
10/15/2018
Source:
MITRE