Detections
Analytics
Ubuntu 8.04 LTS : kvm regression (USN-776-2)
high Nessus Plugin ID 38777
Synopsis
The remote Ubuntu host is missing one or more security-related patches.Description
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. We apologize for the inconvenience.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-2008-1945, 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. (CVE-2008-2382)
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. (CVE-2008-4539)
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.
(CVE-2008-5714).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected kvm and / or kvm-source packages.See Also
Plugin Details
Severity: High
ID: 38777
File Name: ubuntu_USN-776-2.nasl
Version: 1.15
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 5/14/2009
Updated: 1/19/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
Vulnerability Information
CPE: p-cpe:/a:canonical:ubuntu_linux:kvm, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:kvm-source
Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 5/13/2009
Reference Information
CVE: CVE-2008-1945, CVE-2008-2004, CVE-2008-2382, CVE-2008-4539, CVE-2008-5714