CVE-2016-6833
published 2016-12-10CVE-2016-6833: Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to…
PriorityP413medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.39%
31.2th percentile
Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | qemu | < qemu 1:2.6+dfsg-3.1 (bookworm) | qemu 1:2.6+dfsg-3.1 (bookworm) |
| qemu | qemu | <= 2.6.2 | — |
| qemu | qemu | — | — |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 1:2.6+dfsg-3.1 | 1:2.6+dfsg-3.1 |
| qemu | qemu | >= 0 < 2.0.0+dfsg-2ubuntu1.30 | 2.0.0+dfsg-2ubuntu1.30 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-5ubuntu10.6 | 1:2.5+dfsg-5ubuntu10.6 |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_redhat7.5HIGH
vendor_ubuntu5.5MEDIUM
vendor_debian4.4MEDIUM
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GHSA
GHSA-78cx-qvrx-grfp: Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3
ghsa_unreviewed·2022-05-13
CVE-2016-6833 [MEDIUM] CWE-416 GHSA-78cx-qvrx-grfp: Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3
Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
OSV
CVE-2016-6833: Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3
osv·2016-12-10·CVSS 4.4
CVE-2016-6833 [MEDIUM] CVE-2016-6833: Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3
Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
OSV
qemu, qemu-kvm vulnerabilities
osv·2016-11-09·CVSS 5.5
CVE-2016-5403 [MEDIUM] qemu, qemu-kvm vulnerabilities
qemu, qemu-kvm vulnerabilities
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A
privileged attacker inside the guest could use this issue to cause QEMU to
consume resources, resulting in a denial of service. (CVE-2016-5403)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service. This
issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10.
(CVE-2016-6833, CVE-2016-6834, CVE-2016-6888)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of se
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2016-11-09·CVSS 5.5
CVE-2016-5403 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A
privileged attacker inside the guest could use this issue to cause QEMU to
consume resources, resulting in a denial of service. (CVE-2016-5403)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue to cause QEMU to crash, resulting in a denial of service. This
issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10.
(CVE-2016-6833, CVE-2016-6834, CVE-2016-6888)
Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network
card emulation support. A privileged attacker inside the guest could use
this issue
Red Hat
Qemu: net: vmxnet3: use-after-free while writing to device
vendor_redhat·2016-08-09·CVSS 4.4
CVE-2016-6833 [MEDIUM] CWE-416 Qemu: net: vmxnet3: use-after-free while writing to device
Qemu: net: vmxnet3: use-after-free while writing to device
Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
Package: kvm (Red Hat Enterprise Linux 5) - Not affected
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 6) - Not affected
Package: qemu-kvm (Red Hat Enterprise Linux 7) - Not affected
Package: qemu-kvm-rhev (Red Hat Enterprise Linux 7) - Not affected
Package: qemu-kvm-rhev (Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)) - Not affected
Package: qemu-kvm-rhev (Red Hat Enterprise Linux OpenStack Platform 6 (
Red Hat
php: Invalid free() instead of efree() in phar_extract_file()
vendor_redhat·2016-06-21·CVSS 7.5
CVE-2016-4473 [HIGH] php: Invalid free() instead of efree() in phar_extract_file()
php: Invalid free() instead of efree() in phar_extract_file()
/ext/phar/phar_object.c in PHP 7.0.7 and 5.6.x allows remote attackers to execute arbitrary code. NOTE: Introduced as part of an incomplete fix to CVE-2015-6833.
Package: php (Red Hat Enterprise Linux 5) - Not affected
Package: php53 (Red Hat Enterprise Linux 5) - Not affected
Package: php (Red Hat Enterprise Linux 6) - Not affected
Package: php (Red Hat Enterprise Linux 7) - Not affected
Package: php54-php (Red Hat Software Collections) - Not affected
Package: php55-php (Red Hat Software Collections) - Not affected
Debian
CVE-2016-6833: qemu - Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmx...
vendor_debian·2016·CVSS 4.4
CVE-2016-6833 [MEDIUM] CVE-2016-6833: qemu - Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmx...
Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.
Scope: local
bookworm: resolved (fixed in 1:2.6+dfsg-3.1)
bullseye: resolved (fixed in 1:2.6+dfsg-3.1)
forky: resolved (fixed in 1:2.6+dfsg-3.1)
sid: resolved (fixed in 1:2.6+dfsg-3.1)
trixie: resolved (fixed in 1:2.6+dfsg-3.1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
bugzilla·2016-08-22·CVSS 4.4
CVE-2016-6833 [MEDIUM] CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
Quick Emulator(Qemu) built with the VMWARE VMXNET3 NIC device support is
vulnerable to a use-after-free issue. It could occur while writing to the
device once it's disabled.
A privileged user inside guest could use this issue to crash the Qemu process
instance resulting in DoS.
Upstream patch
-> http://git.qemu.org/?p=qemu.git;a=commit;h=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8
Reference:
-> http://www.openwall.com/lists/oss-security/2016/08/18/3
Discussion:
Acknowledgments:
Name: Li Qiang (Qihoo 360 Inc.)
---
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1368982]
Bugzilla
CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device [fedora-all]
bugzilla·2016-08-22·CVSS 4.4
CVE-2016-6833 [MEDIUM] CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device [fedora-all]
CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported vers
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8http://www.openwall.com/lists/oss-security/2016/08/12/1http://www.openwall.com/lists/oss-security/2016/08/18/3http://www.securityfocus.com/bid/93255https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.htmlhttps://security.gentoo.org/glsa/201609-01http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8http://www.openwall.com/lists/oss-security/2016/08/12/1http://www.openwall.com/lists/oss-security/2016/08/18/3http://www.securityfocus.com/bid/93255https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.htmlhttps://security.gentoo.org/glsa/201609-01
2016-12-10
Published