CVE-2011-0011 Auth bypass in n/a

Medium 4.3 Published 21 Jun 2012 Updated 6 Aug 2024

Remote attackers can bypass VNC authentication in QEMU-KVM when the password is cleared, gaining unauthorized access to virtual machine sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2011-0011?

CVE-2011-0011 is a medium-severity authentication bypass vulnerability in Qemu Qemu, published on 21 Jun 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

qemu-kvm before 0.11.0 disables VNC authentication when the password is cleared, which allows remote attackers to bypass authentication and establish VNC sessions.

Weakness: CWE-287

Which versions are affected by CVE-2011-0011?

It affects 1 product.

Linux distribution packages (16)

`qemu-img` Red Hat:enterprise_linux:6::client	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm` Red Hat:enterprise_linux:6::client	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-tools` Red Hat:enterprise_linux:6::client	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-img` Red Hat:enterprise_linux:6::computenode	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm` Red Hat:enterprise_linux:6::computenode	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-tools` Red Hat:enterprise_linux:6::computenode	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-img` Red Hat:enterprise_linux:6::server	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm` Red Hat:enterprise_linux:6::server	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-tools` Red Hat:enterprise_linux:6::server	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-img` Red Hat:enterprise_linux:6::workstation	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm` Red Hat:enterprise_linux:6::workstation	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`2:0.12.1.2-2.113.el6_0.8`
`qemu-kvm-tools` Red Hat:enterprise_linux:6::workstation	All versions	`2:0.12.1.2-2.113.el6_0.8`

Products include Qemu Qemu.

How do I fix CVE-2011-0011?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2011-0011 being exploited?

There is no known exploitation of CVE-2011-0011 in the wild and no public exploit code.

All Qemu Qemu vulnerabilities

Sources

Also known as GHSA-x485-7p7r-jxj7, RHSA-2011:0345.