CVE-2011-3346 Memory corruption in n/a

Medium 4.0 Published 1 Apr 2014 Updated 6 Aug 2024

Local guest users can crash the guest system via a crafted SCSI command if specific permissions are manually modified.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2011-3346?

CVE-2011-3346 is a medium-severity memory corruption vulnerability in Qemu Qemu, published on 1 Apr 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Buffer overflow in hw/scsi-disk.c in the SCSI subsystem in QEMU before 0.15.2, as used by Xen, might allow local guest users with permission to access the CD-ROM to cause a denial of service (guest crash) via a crafted SAI READ CAPACITY SCSI command. NOTE: this is only a vulnerability when root has manually modified certain permissions or ACLs.

Weakness: CWE-119

Which versions are affected by CVE-2011-3346?

It affects 3 products.

Linux distribution packages (12)

`xen` Red Hat:enterprise_linux:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen-libs` Red Hat:enterprise_linux:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen` Red Hat:enterprise_linux:5::server	All versions	`0:3.0.3-132.el5_7.2`
`xen-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:3.0.3-132.el5_7.2`
`xen-libs` Red Hat:enterprise_linux:5::server	All versions	`0:3.0.3-132.el5_7.2`
`xen` Red Hat:rhel_virtualization:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen-debuginfo` Red Hat:rhel_virtualization:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen-devel` Red Hat:rhel_virtualization:5::client	All versions	`0:3.0.3-132.el5_7.2`
`xen` Red Hat:rhel_virtualization:5::server	All versions	`0:3.0.3-132.el5_7.2`
`xen-debuginfo` Red Hat:rhel_virtualization:5::server	All versions	`0:3.0.3-132.el5_7.2`
`xen-devel` Red Hat:rhel_virtualization:5::server	All versions	`0:3.0.3-132.el5_7.2`

Products include Qemu Qemu, Redhat Enterprise Linux, Xen Xen.

How do I fix CVE-2011-3346?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-3346 being exploited?

There is no known exploitation of CVE-2011-3346 in the wild and no public exploit code.

All Qemu Qemu vulnerabilities

Sources

Also known as GHSA-q6jm-gv84-4cp6, RHSA-2011:1401.