Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the header, related to use of uninitialized memory in a validation check.

The remote MiracleLinux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2009-33:01 advisory.

    Libvirt is a C toolkit to interract with the virtualization capabilities of recent versions of Linux (and     other OSes).
    Fixed bugs:
    CVE-2008-5086     Multiple methods in libvirt 0.3.2 through 0.5.1 do not check if a connection is read-only, which allows     local users to bypass intended access restrictions and perform administrative actions.
    CVE-2009-0036     Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1     might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet,     and then sending the remainder of the packet with crafted values in the header, related to use of     uninitialized memory in a validation check.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2009-0382 advisory.

    - Add missing readonly checks for APIs (CVE-2008-5086)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2009:0382 advisory.

  - libvirt: missing checks for read-only connection (CVE-2008-5086)

  - libvirt: libvirt_proxy buffer overflow (CVE-2009-0036)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The libvirtd daemon was discovered to not properly check user connection permissions before performing certain privileged actions, such as requesting migration of an unprivileged guest domain to another system. A local user able to establish a read-only connection to libvirtd could use this flaw to perform actions that should be restricted to read-write connections. (CVE-2008-5086)

libvirt_proxy, a setuid helper application allowing non-privileged users to communicate with the hypervisor, was discovered to not properly validate user requests. Local users could use this flaw to cause a stack-based buffer overflow in libvirt_proxy, possibly allowing them to run arbitrary code with root privileges.
(CVE-2009-0036)

After installing the update, libvirtd must be restarted manually (for example, by issuing a 'service libvirtd restart' command) for this change to take effect.

ID	Name	Product	Family	Severity
284056	MiracleLinux 3 : libvirt-0.3.3-14.1.1AXS3 (AXSA:2009-33:01)	Nessus	Miracle Linux Local Security Checks	critical
67832	Oracle Linux 5 : libvirt (ELSA-2009-0382)	Nessus	Oracle Linux Local Security Checks	critical
63878	RHEL 5 : libvirt (RHSA-2009:0382)	Nessus	Red Hat Local Security Checks	critical
60551	Scientific Linux Security Update : libvirt on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high

Detections

Analytics

CVE-2009-0036

critical

Tenable Plugins

critical

critical

critical

high