The mptsas_fetch_requests function in hw/scsi/mptsas.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop, and CPU consumption or QEMU process crash) via vectors involving s->state.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - Qemu: ps2: information leakage via post_load routine (CVE-2017-16845)

  - QEMU (aka Quick Emulator) built with an IDE AHCI emulation support is vulnerable to a null pointer     dereference flaw. It occurs while unmapping the Frame Information Structure (FIS) and Command List Block     (CLB) entries. A privileged user inside guest could use this flaw to crash the QEMU process instance     resulting in DoS. (CVE-2016-2197)

  - The mptsas_fetch_requests function in hw/scsi/mptsas.c in QEMU (aka Quick Emulator) allows local guest OS     administrators to cause a denial of service (infinite loop, and CPU consumption or QEMU process crash) via     vectors involving s->state. (CVE-2016-4964)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote host is affected by the vulnerability described in GLSA-201609-01 (QEMU: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the       CVE identifiers referenced below for details.
  Impact :

    Local users within a guest QEMU environment can execute arbitrary code       within the host or a cause a Denial of Service condition of the QEMU       guest process.
  Workaround :

    There is no known workaround at this time.

- CVE-2016-4002: net: buffer overflow in MIPSnet (bz     #1326083)

  - CVE-2016-4952 scsi: pvscsi: out-of-bounds access issue

  - CVE-2016-4964: scsi: mptsas infinite loop (bz #1339157)

  - CVE-2016-5106: scsi: megasas: out-of-bounds write (bz     #1339581)

  - CVE-2016-5105: scsi: megasas: stack information leakage     (bz #1339585)

  - CVE-2016-5107: scsi: megasas: out-of-bounds read (bz     #1339573)

  - CVE-2016-4454: display: vmsvga: out-of-bounds read (bz     #1340740)

  - CVE-2016-4453: display: vmsvga: infinite loop (bz     #1340744)

  - CVE-2016-5126: block: iscsi: buffer overflow (bz     #1340925)

  - CVE-2016-5238: scsi: esp: OOB write (bz #1341932)

  - CVE-2016-5338: scsi: esp: OOB r/w access (bz #1343325)

  - CVE-2016-5337: scsi: megasas: information leakage (bz     #1343910)

  - Fix crash with -nodefaults -sdl (bz #1340931)

  - Add deps on edk2-ovmf and edk2-aarch64

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
198555	RHEL 7 : qemu-kvm-rhev (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
93697	GLSA-201609-01 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
92277	Fedora 24 : 2:qemu (2016-a80eab65ba)	Nessus	Fedora Local Security Checks	critical

Detections

Analytics

CVE-2016-4964

medium

Tenable Plugins

critical

critical

critical