CVE-2014-0148

Qemu: vhdx: bounds checking for block_size and logical_sector_size

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.

El controlador de bloques de Qemu versiones anteriores a 2.0 para imágenes VHDX de Hyper-V es vulnerable a bucles infinitos y otros problemas potenciales cuando son calculadas las entradas BAT, debido a que faltan comprobaciones de límites para las variables block_size y logical_sector_size. Éstas son usadas para derivar otros campos como "sectors_per_block", etc. Un usuario capaz de alterar la imagen de disco de Qemu podría aprovechar este fallo para bloquear la instancia de Qemu, resultando en una DoS

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-12-03 CVE Reserved
2014-04-22 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CAPEC

References (7)

URL	Tag	Source
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1d7678dec4761acdc43439da6ceda41a703ba1a6	X_refsource_misc
http://rhn.redhat.com/errata/RHSA-2014-0420.html	Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0421.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2014/03/26/8	2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=1078212	2014-06-09
https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html	2023-02-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2014-0148	2014-06-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				< 2.0.0 Search vendor "Qemu" for product "Qemu" and version " < 2.0.0"		-		Affected
Redhat Search vendor "Redhat"		Virtualization Search vendor "Redhat" for product "Virtualization"				3.0 Search vendor "Redhat" for product "Virtualization" and version "3.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				6.5 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "6.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Openstack Platform Search vendor "Redhat" for product "Enterprise Linux Openstack Platform"				5 Search vendor "Redhat" for product "Enterprise Linux Openstack Platform" and version "5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				6.5 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "6.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				6.5 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "6.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected