Buffer overflow in NetRxPkt::ehdr_buf in hw/net/net_rx_pkt.c in QEMU (aka Quick Emulator), when the VLANSTRIP feature is enabled on the vmxnet3 device, allows remote attackers to cause a denial of service (out-of-bounds access and QEMU process crash) via vectors related to VLAN stripping.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4713 advisory.

    - Document CVEs as fixed: CVE-2017-9524, CVE-2017-6058, CVE-2017-5931 (Mark Kanda)  [Orabug: 29886908]     {CVE-2017-5931} {CVE-2017-6058} {CVE-2017-9524}
    - pvrdma: release device resources in case of an error (Prasad J Pandit)  [Orabug: 29056678]     {CVE-2018-20123}
    - qxl: check release info object (Prasad J Pandit)  [Orabug: 29886906]  {CVE-2019-12155}
    - target/i386: add MDS-NO feature (Paolo Bonzini)  [Orabug: 29820428]  {CVE-2018-12126} {CVE-2018-12127}     {CVE-2018-12130} {CVE-2019-11091}
    - docs: recommend use of md-clear feature on all Intel CPUs (Daniel P. Berrange)  [Orabug: 29820428]     {CVE-2018-12126} {CVE-2018-12127} {CVE-2018-12130} {CVE-2019-11091}
    - target/i386: define md-clear bit (Paolo Bonzini)  [Orabug: 29820428]  {CVE-2018-12126} {CVE-2018-12127}     {CVE-2018-12130} {CVE-2019-11091}

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 host is affected by the vulnerability described in GLSA-201704-01 (QEMU: Multiple vulnerabilities)

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

    Remote server can cause a crash in the client causing execution of       arbitrary code, and a Denial of Service within the QEMU process. Remote       or Local users within a guest QEMU environment can cause a Denial of       Service condition of the QEMU guest process.
  Workaround :

    There is no known workaround at this time.

- CVE-2016-7907: net: imx: infinite loop (bz #1381182)

  - CVE-2017-5525: audio: memory leakage in ac97 (bz     #1414110)

  - CVE-2017-5526: audio: memory leakage in es1370 (bz     #1414210)

  - CVE-2016-10155 watchdog: memory leakage in i6300esb (bz     #1415200)

  - CVE-2017-5552: virtio-gpu-3d: memory leakage (bz     #1415283)

  - CVE-2017-5578: virtio-gpu: memory leakage (bz #1415797)

  - CVE-2017-5667: sd: sdhci OOB access during multi block     transfer (bz #1417560)

  - CVE-2017-5856: scsi: megasas: memory leakage (bz     #1418344)

  - CVE-2017-5857: virtio-gpu-3d: host memory leakage in     virgl_cmd_resource_unref (bz #1418383)

  - CVE-2017-5898: usb: integer overflow in     emulated_apdu_from_guest (bz #1419700)

  - CVE-2017-5987: sd: infinite loop issue in multi block     transfers (bz #1422001)

  - CVE-2017-6058: vmxnet3: OOB access when doing vlan     stripping (bz #1423359)

  - CVE-2017-6505: usb: an infinite loop issue in     ohci_service_ed_list (bz #1429434)

  - CVE-2017-2615: cirrus: oob access while doing bitblt     copy backward (bz #1418206)

  - CVE-2017-2620: cirrus: potential arbitrary code     execution (bz #1425419)

  - Fix spice GL with new mesa/libglvnd (bz #1431905)

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
126673	Oracle Linux 7 : qemu (ELSA-2019-4713)	Nessus	Oracle Linux Local Security Checks	high
99274	GLSA-201704-01 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
97804	Fedora 25 : 2:qemu (2017-31b976672b)	Nessus	Fedora Local Security Checks	critical

Detections

Analytics

CVE-2017-6058

high

Tenable Plugins

high

critical

critical