CVE-2007-3731

NULL pointer dereference triggered by ptrace

Severity Score

4.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El kernel de Linux 2.6.20 y 2.6.21 no maneja de forma adecuada un segmento de selección LDT no válido en %cs (el campo xcs)a lo largo de las operaciones paso-simple ptrace, lo caul permite a usuarios loalces provocar denegación de servicio (referencia NULL y OOPS) a través de ciertos códigos que realizan las respuestas ptrace PTRACE_SETREGS y PTRACE_SINGLESTEP, relacionado con la función TRACE_IRQS_ON, y posiblemente relacionado con la función arch_ptrace.

*Credits: N/A

CVSS Scores

NISTv2 4.9

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2007-07-12 CVE Reserved
2007-09-17 CVE Published
2023-03-08 EPSS Updated
2024-08-07 CVE Updated
2024-08-07 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-476: NULL Pointer Dereference

CAPEC

References (19)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=29eb51101c02df517ca64ec472d7501127ad1da8	X_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=a10d9a71bafd3a283da240d2868e71346d2aef6f	X_refsource_confirm
http://osvdb.org/37286	Vdb Entry
http://secunia.com/advisories/26935	Third Party Advisory
http://secunia.com/advisories/26955	Third Party Advisory
http://secunia.com/advisories/26978	Third Party Advisory
http://secunia.com/advisories/27322	Third Party Advisory
http://secunia.com/advisories/29159	Third Party Advisory
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0094	X_refsource_confirm
http://www.securityfocus.com/archive/1/488972/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/25801	Vdb Entry
https://issues.rpath.com/browse/RPL-2304	X_refsource_confirm
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10394	Signature

URL	Date	SRC
http://bugzilla.kernel.org/show_bug.cgi?id=8765	2024-08-07

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=248324	2007-10-22

URL	Date	SRC
http://www.debian.org/security/2007/dsa-1378	2023-02-13
http://www.redhat.com/support/errata/RHSA-2007-0940.html	2023-02-13
http://www.ubuntu.com/usn/usn-518-1	2023-02-13
https://access.redhat.com/security/cve/CVE-2007-3731	2007-10-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				2.6.20 Search vendor "Linux" for product "Linux Kernel" and version "2.6.20"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				2.6.21 Search vendor "Linux" for product "Linux Kernel" and version "2.6.21"		-		Affected