CVE-2010-4247

xen: request-processing loop is unbounded in blkback

Severity Score

5.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.

La función do_block_io_op en (1) ldrivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c en Xen anterior a v3.4.0 para el kernel Linux v2.6.18, y posiblemente otras versiones, permite a los usuarios invitados del sistema operativo causar una denegación de servicio (bucle infinito y el consumo de CPU) a través de un gran índice de producción de peticiones a los controladores blkback o blktap back-end. NOTA: algunos de estos detalles han sido obtenidos de información de terceros.

*Credits: N/A

CVSS Scores

NISTv2 5.5

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2010-11-16 CVE Reserved
2011-01-11 CVE Published
2023-03-08 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (14)

URL	Tag	Source
http://secunia.com/advisories/42789	Third Party Advisory
http://secunia.com/advisories/46397	Third Party Advisory
http://www.securityfocus.com/archive/1/520102/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/45029	Vdb Entry
http://www.vmware.com/security/advisories/VMSA-2011-0012.html	X_refsource_confirm
http://www.vupen.com/english/advisories/2011/0024	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2010/11/23/1	2023-11-07
http://www.openwall.com/lists/oss-security/2010/11/24/8	2023-11-07
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c	2023-11-07
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=656206	2011-01-04

URL	Date	SRC
http://secunia.com/advisories/35093	2023-11-07
http://www.redhat.com/support/errata/RHSA-2011-0004.html	2023-11-07
https://access.redhat.com/security/cve/CVE-2010-4247	2011-01-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	<= 3.3.2 Search vendor "Citrix" for product "Xen" and version " <= 3.3.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.0.2 Search vendor "Citrix" for product "Xen" and version "3.0.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.0.3 Search vendor "Citrix" for product "Xen" and version "3.0.3"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.0.4 Search vendor "Citrix" for product "Xen" and version "3.0.4"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.1.3 Search vendor "Citrix" for product "Xen" and version "3.1.3"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.1.4 Search vendor "Citrix" for product "Xen" and version "3.1.4"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.2.0 Search vendor "Citrix" for product "Xen" and version "3.2.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.2.1 Search vendor "Citrix" for product "Xen" and version "3.2.1"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.2.2 Search vendor "Citrix" for product "Xen" and version "3.2.2"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.2.3 Search vendor "Citrix" for product "Xen" and version "3.2.3"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.3.0 Search vendor "Citrix" for product "Xen" and version "3.3.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe
Citrix Search vendor "Citrix"	Xen Search vendor "Citrix" for product "Xen"	3.3.1 Search vendor "Citrix" for product "Xen" and version "3.3.1"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Safe