Ubuntu Security Notice USN-776-2 - USN-776-1 fixed vulnerabilities in KVM. Due to an incorrect fix, a regression was introduced in Ubuntu 8.04 LTS that caused KVM to fail to boot virtual machines started via libvirt. This update fixes the problem. Avi Kivity discovered that KVM did not correctly handle certain disk formats. A local attacker could attach a malicious partition that would allow the guest VM to read files on the VM host. Alfredo Ortega discovered that KVM's VNC protocol handler did not correctly validate certain messages. A remote attacker could send specially crafted VNC messages that would cause KVM to consume CPU resources, leading to a denial of service. Jan Niehusmann discovered that KVM's Cirrus VGA implementation over VNC did not correctly handle certain bitblt operations. A local attacker could exploit this flaw to potentially execute arbitrary code on the VM host or crash KVM, leading to a denial of service. It was discovered that KVM's VNC password checks did not use the correct length. A remote attacker could exploit this flaw to cause KVM to crash, leading to a denial of service.
494dd7a7b640d12307b6ec6753130b3f5f824fcc8ecb4f7a49332420d07598a3Ubuntu Security Notice USN-776-1 - Avi Kivity discovered that KVM did not correctly handle certain disk formats. A local attacker could attach a malicious partition that would allow the guest VM to read files on the VM host. CVE-2008-2004) Alfredo Ortega discovered that KVM's VNC protocol handler did not correctly validate certain messages. A remote attacker could send specially crafted VNC messages that would cause KVM to consume CPU resources, leading to a denial of service. Jan Niehusmann discovered that KVM's Cirrus VGA implementation over VNC did not correctly handle certain bitblt operations. A local attacker could exploit this flaw to potentially execute arbitrary code on the VM host or crash KVM, leading to a denial of service. It was discovered that KVM's VNC password checks did not use the correct length. A remote attacker could exploit this flaw to cause KVM to crash, leading to a denial of service.
58f223c2297cdd9c2c7ddb064e41a550ca946b93c8a244622b78b946d06414ffMandriva Linux Security Advisory 2009-010 - A security vulnerability have been discovered and corrected in VNC server of qemu 0.9.1 and earlier, which could lead to a denial-of-service attack. The updated packages have been patched to prevent this.
831766712ac3403f70e8c9b5418151753e7bc3ee853ce30604f58dc350031225Mandriva Linux Security Advisory 2009-009 - Security vulnerabilities have been discovered and corrected in VNC server of kvm version 79 and earlier, which could lead to denial-of-service attacks. The updated packages have been patched to prevent this.
357e44597fbdd7c4a9865cf676aa3cb015ead34be839af689ace128ac54035a3Mandriva Linux Security Advisory 2009-008 - Security vulnerabilities have been discovered and corrected in VNC server of qemu version 0.9.1 and earlier, which could lead to denial-of-service attacks. The updated packages have been patched to prevent this.
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