Vulnerability Name:

CVE-2011-2512 (CCN-68328)

Assigned:2011-05-08
Published:2011-05-08
Updated:2023-02-13
Summary:The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.
CVSS v3 Severity:4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.8 Medium (CVSS v2 Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P)
4.5 Medium (Temporal CVSS v2 Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:W/RC:UR)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N)
1.6 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N/E:U/RL:W/RC:UR)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
6.5 Medium (REDHAT CVSS v2 Vector: AV:A/AC:H/Au:S/C:C/I:C/A:C)
5.0 Medium (REDHAT Temporal CVSS v2 Vector: AV:A/AC:H/Au:S/C:C/I:C/A:C/E:U/RL:W/RC:UR)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): High
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Gain Privileges
References:Source: CCN
Type: QEMU Web page
QEMU

Source: MITRE
Type: CNA
CVE-2011-2512

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Patchwork Web site
virtio: guard against negative vq notifies

Source: CCN
Type: RHSA-2011-0919
Important: qemu-kvm security and bug fix update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: SA44458
Qemu PIIX4 Hotplug Vulnerability

Source: CCN
Type: SA44648
KVM qemu-kvm PIIX4 Hotplug Vulnerability

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: DEBIAN
Type: DSA-2270
qemu-kvm -- programming error

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: CCN
Type: OSVDB ID: 74751
KVM qemu-kvm VirtIO Queue Notification Local Privilege Escalation

Source: CCN
Type: BID-48499
QEMU KVM 'virtio_queue_notify()' Local Privilege Escalation Vulnerability

Source: XF
Type: UNKNOWN
qemu-virtio-code-execution(68328)

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20112512
    V
    		CVE-2011-2512
    2022-05-20
    oval:org.mitre.oval:def:12421
    P
    		DSA-2270-1 qemu-kvm -- programming error
    2014-07-21
    oval:org.mitre.oval:def:13974
    P
    		USN-1165-1 -- qemu-kvm vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:23582
    P
    		ELSA-2011:0919: qemu-kvm security and bug fix update (Important)
    2014-05-26
    oval:org.mitre.oval:def:22055
    P
    		RHSA-2011:0919: qemu-kvm security and bug fix update (Important)
    2014-02-24
    oval:com.redhat.rhsa:def:20110919
    P
    		RHSA-2011:0919: qemu-kvm security and bug fix update (Important)
    2011-07-05
    BACK