CVE-2016-9602
published 2018-04-26CVE-2016-9602: Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access…
PriorityP351high8.8CVSS 3.0
AVNACLPRLUINSUCHIHAH
EPSS
3.79%
88.8th percentile
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | qemu | < qemu 1:2.8+dfsg-3 (bookworm) | qemu 1:2.8+dfsg-3 (bookworm) |
| qemu | qemu | < 2.9 | 2.9 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-3 | 1:2.8+dfsg-3 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-3 | 1:2.8+dfsg-3 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-3 | 1:2.8+dfsg-3 |
| qemu | qemu | >= 0 < 1:2.8+dfsg-3 | 1:2.8+dfsg-3 |
| qemu | qemu | >= 0 < 2.0.0+dfsg-2ubuntu1.33 | 2.0.0+dfsg-2ubuntu1.33 |
| qemu | qemu | >= 0 < 1:2.5+dfsg-5ubuntu10.11 | 1:2.5+dfsg-5ubuntu10.11 |
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
osv8.8HIGH
vendor_debian7.6HIGH
vendor_redhat7.6HIGH
vendor_ubuntu5.5MEDIUM
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GHSA
GHSA-43hg-r8gj-3mp9: Qemu before version 2
ghsa_unreviewed·2022-05-13
CVE-2016-9602 [HIGH] CWE-59 GHSA-43hg-r8gj-3mp9: Qemu before version 2
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
OSV
CVE-2016-9602: Qemu before version 2
osv·2018-04-26·CVSS 8.8
CVE-2016-9602 [HIGH] CVE-2016-9602: Qemu before version 2
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
OSV
qemu vulnerabilities
osv·2017-04-20·CVSS 5.5
CVE-2016-10028 [MEDIUM] qemu vulnerabilities
qemu vulnerabilities
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. This issue only affected Ubuntu
16.04 LTS and Ubuntu 16.10. (CVE-2016-10028, CVE-2016-10029)
Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A
privileged attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2016-10155)
Li Qiang discovered that QEMU incorrectly handled the i.MX Fast Ethernet
Controller. 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 16.04 LTS and Ubuntu 16.10. (CVE-2016-7907)
It was disc
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2017-04-25·CVSS 5.5
CVE-2016-10028 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2016-10028)
It was discovered that QEMU incorrectly handled the JAZZ RC4030 device. A
privileged attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2016-8667)
Jann Horn discovered that QEMU incorrectly handled VirtFS directory
sharing. A privileged attacker inside the guest could use this issue to
access files on the host file system outside of the shared directory and
possibly escalate their privileges. In the default installation, when QEMU
is used with libvir
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2017-04-20·CVSS 5.5
CVE-2016-10028 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU
device. An attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. This issue only affected Ubuntu
16.04 LTS and Ubuntu 16.10. (CVE-2016-10028, CVE-2016-10029)
Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A
privileged attacker inside the guest could use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2016-10155)
Li Qiang discovered that QEMU incorrectly handled the i.MX Fast Ethernet
Controller. 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 Ub
Red Hat
Qemu: 9p: virtfs allows guest to access host filesystem
vendor_redhat·2017-01-17·CVSS 7.6
CVE-2016-9602 [HIGH] CWE-59 Qemu: 9p: virtfs allows guest to access host filesystem
Qemu: 9p: virtfs allows guest to access host filesystem
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
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 (Red Hat Enterprise Linux 8) - Not affected
Package: qemu-kvm-rhev (Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)) - Not affected
Package: qemu-kvm
Debian
CVE-2016-9602: qemu - Qemu before version 2.9 is vulnerable to an improper link following when built w...
vendor_debian·2016·CVSS 7.6
CVE-2016-9602 [HIGH] CVE-2016-9602: qemu - Qemu before version 2.9 is vulnerable to an improper link following when built w...
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
Scope: local
bookworm: resolved (fixed in 1:2.8+dfsg-3)
bullseye: resolved (fixed in 1:2.8+dfsg-3)
forky: resolved (fixed in 1:2.8+dfsg-3)
sid: resolved (fixed in 1:2.8+dfsg-3)
trixie: resolved (fixed in 1:2.8+dfsg-3)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem [fedora-all]
bugzilla·2017-01-17·CVSS 7.6
CVE-2016-9602 [HIGH] CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem [fedora-all]
CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem [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 version
Bugzilla
CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem
bugzilla·2017-01-17·CVSS 7.6
CVE-2016-9602 [HIGH] CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem
CVE-2016-9602 Qemu: 9p: virtfs allows guest to access host filesystem
Quick Emulator(Qemu) built with the VirtFS, host directory sharing via Plan 9
File System(9pfs) support, is vulnerable to an improper link following issue.
It could occur while accessing symbolic link files on a shared host directory.
A privileged user inside guest could use this flaw to access host file system
beyond the shared folder and potentially escalating their privileges on a host.
Upstream patches:
-> https://lists.gnu.org/archive/html/qemu-devel/2017-01/msg06225.html
-> https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04347.html
Reference:
-> http://wiki.qemu.org/Documentation/9psetup
-> http://www.openwall.com/lists/oss-security/2017/01/17/12
Discussion:
Acknowledgments:
Name: Jann Horn (Google
http://www.openwall.com/lists/oss-security/2017/01/17/12http://www.securityfocus.com/bid/95461http://www.securitytracker.com/id/1037604https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9602https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2017-01/msg06225.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04347.htmlhttps://security.gentoo.org/glsa/201704-01http://www.openwall.com/lists/oss-security/2017/01/17/12http://www.securityfocus.com/bid/95461http://www.securitytracker.com/id/1037604https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9602https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2017-01/msg06225.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04347.htmlhttps://security.gentoo.org/glsa/201704-01
2018-04-26
Published