FreeBSD : qemu, xen-tools -- QEMU leak of uninitialized heap memory in rtl8139 device model (f06f20dc-4347-11e5-93ad-002590263bf5)

medium Nessus Plugin ID 85486
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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The Xen Project reports :

The QEMU model of the RTL8139 network card did not sufficiently validate inputs in the C+ mode offload emulation. This results in uninitialized memory from the QEMU process's heap being leaked to the domain as well as to the network.

A guest may be able to read sensitive host-level data relating to itself which resides in the QEMU process.

Such information may include things such as information relating to real devices backing emulated devices or passwords which the host administrator does not intend to share with the guest admin.

Solution

Update the affected packages.

See Also

http://xenbits.xen.org/xsa/advisory-140.html

http://www.nessus.org/u?aed3e804

http://www.nessus.org/u?0db81bbc

Plugin Details

Severity: Medium

ID: 85486

File Name: freebsd_pkg_f06f20dc434711e593ad002590263bf5.nasl

Version: 2.8

Type: local

Published: 8/18/2015

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4.5

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:qemu, p-cpe:/a:freebsd:freebsd:qemu-devel, p-cpe:/a:freebsd:freebsd:qemu-sbruno, p-cpe:/a:freebsd:freebsd:qemu-user-static, p-cpe:/a:freebsd:freebsd:xen-tools, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 8/17/2015

Vulnerability Publication Date: 8/3/2015

Reference Information

CVE: CVE-2015-5165