CVE-2011-4111

qemu: ccid: buffer overflow in handling of VSC_ATR message

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Buffer overflow in the ccid_card_vscard_handle_message function in hw/ccid-card-passthru.c in QEMU before 0.15.2 and 1.x before 1.0-rc4 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted VSC_ATR message.

Desbordamiento de buffer en la función ccid_card_vscard_handle_message en hw/ccid-card-passthru.c en QEMU anterior a 0.15.2 y 1.x anterior a 1.0-rc4 permite a atacantes remotos causar una denegación de servicio (caída) y posiblemente ejecutar código arbitrario a través de un mensaje VSC_ATR manipulado.

KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. A flaw was found in the way qemu-kvm handled VSC_ATR messages when a guest was configured for a CCID USB smart card reader in passthrough mode. An attacker able to connect to the port on the host being used for such a device could use this flaw to crash the qemu-kvm process on the host or, possibly, escalate their privileges on the host.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-10-18 CVE Reserved
2011-12-07 CVE Published
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (6)

URL	Tag	Source
http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log	X_refsource_confirm
http://git.qemu.org/?p=qemu.git%3Ba=log%3Bh=refs/heads/stable-1.0	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2011-1777.html	2023-02-13
http://rhn.redhat.com/errata/RHSA-2011-1801.html	2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=751310	2011-12-08
https://access.redhat.com/security/cve/CVE-2011-4111	2011-12-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Supplementary Search vendor "Redhat" for product "Enterprise Linux Server Supplementary"				6.1.z Search vendor "Redhat" for product "Enterprise Linux Server Supplementary" and version "6.1.z"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				<= 0.15.1 Search vendor "Qemu" for product "Qemu" and version " <= 0.15.1"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				0.15.0 Search vendor "Qemu" for product "Qemu" and version "0.15.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				0.15.0 Search vendor "Qemu" for product "Qemu" and version "0.15.0"		rc1		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				0.15.0 Search vendor "Qemu" for product "Qemu" and version "0.15.0"		rc2		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				1.0 Search vendor "Qemu" for product "Qemu" and version "1.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				1.0 Search vendor "Qemu" for product "Qemu" and version "1.0"		rc1		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				1.0 Search vendor "Qemu" for product "Qemu" and version "1.0"		rc2		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				1.0 Search vendor "Qemu" for product "Qemu" and version "1.0"		rc3		Affected