Vulnerability DatabaseCVE-2007-3731
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CVE-2007-3731
September 17, 2007
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.
Related Resources (20)
http://bugzilla.kernel.org/show_bug.cgi?id=8765
http://www.securityfocus.com/bid/25801
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=29eb51101c02df517ca64ec472d7501127ad1da8
https://people.canonical.com/~ubuntu-security/cve/CVE-2007-3731
https://bugzilla.redhat.com/show_bug.cgi?id=248324
https://access.redhat.com/security/cve/CVE-2007-3731
http://www.securityfocus.com/archive/1/488972/100/0/threaded
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=a10d9a71bafd3a283da240d2868e71346d2aef6f
http://secunia.com/advisories/26978
http://secunia.com/advisories/26955
https://issues.rpath.com/browse/RPL-2304
http://www.redhat.com/support/errata/RHSA-2007-0940.html
http://www.debian.org/security/2007/dsa-1378
http://www.ubuntu.com/usn/usn-518-1
http://secunia.com/advisories/27322
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0094
http://secunia.com/advisories/26935
http://secunia.com/advisories/29159
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10394
http://osvdb.org/37286
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CVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.2
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
CVSS v2
Base Score:
4.9
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
0.11