CVE-2019-13164
First published: Thu Jun 20 2019(Updated: )
It was discovered that the Access Control List (ACL) implemented by qemu-bridge-helper program could be bypassed in particular cases when the bridge interface names are as long as IFNAMSIZ-1, ie 15 characters. If the ACL specified in the /etc/qemu-kvm/bridge.conf file denies access to a bridge interface with a name long IFNAMSIZ-1, but it allows all other interfaces, it is possible for a local attacker to use qemu-bridge-helper to create a tap device and attach it to a denied bridge interface, thus bypassing the ACL. This could be used by the attacker to get access to confidential data transmitted on the bridge. Upstream patch: --------------- -> <a href="https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00245.html">https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00245.html</a> Reference: ---------- -> <a href="https://www.openwall.com/lists/oss-security/2019/07/02/2">https://www.openwall.com/lists/oss-security/2019/07/02/2</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/qemu | <=1:3.1+dfsg-8<=1:3.1+dfsg-8~deb10u1 | 1:2.8+dfsg-6+deb9u8 1:4.1-1 1:3.1+dfsg-8+deb10u2 |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u12 1:9.2.0+ds-2 1:9.2.0+ds-5 | |
| QEMU KVM | =3.1 | |
| QEMU KVM | =4.0.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| openSUSE Leap | =15.0 | |
| openSUSE Leap | =15.1 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.04 | |
| Canonical Ubuntu Linux | =19.10 |
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Reference Links
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00245.html
- https://security-tracker.debian.org/tracker/CVE-2019-12164
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12164
- https://security-tracker.debian.org/tracker/CVE-2019-13164
- https://bugzilla.redhat.com/show_bug.cgi?id=1722559
- https://security-tracker.debian.org/tracker/CVE-2017-9524
- https://security-tracker.debian.org/tracker/CVE-2019-14378
- https://security-tracker.debian.org/tracker/CVE-2018-20815
- https://security-tracker.debian.org/tracker/CVE-2019-8934
- https://security-tracker.debian.org/tracker/CVE-2018-20123
- https://security-tracker.debian.org/tracker/CVE-2018-20124
- https://security-tracker.debian.org/tracker/CVE-2018-20125
- https://security-tracker.debian.org/tracker/CVE-2018-20126
- https://security-tracker.debian.org/tracker/CVE-2018-20191
- https://security-tracker.debian.org/tracker/CVE-2018-20216
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931351
- https://www.openwall.com/lists/oss-security/2019/07/02/2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1726407
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1729958
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.html
- http://www.openwall.com/lists/oss-security/2019/07/02/2
- http://www.securityfocus.com/bid/109054
- https://github.com/qemu/qemu/commit/03d7712b4bcd47bfe0fe14ba2fffa87e111fa086
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00145.html
- https://seclists.org/bugtraq/2019/Aug/41
- https://seclists.org/bugtraq/2019/Sep/3
- https://security.gentoo.org/glsa/202003-66
- https://usn.ubuntu.com/4191-1/
- https://usn.ubuntu.com/4191-2/
- https://www.debian.org/security/2019/dsa-4506
- https://www.debian.org/security/2019/dsa-4512
- https://launchpad.net/bugs/cve/CVE-2019-13164
- https://git.qemu.org/?p=qemu.git;a=commitdiff;h=6f5d8671225dc77190647f18a27a0d156d4ca97a
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13164
- https://nvd.nist.gov/vuln/detail/CVE-2019-13164
- https://ubuntu.com/security/CVE-2019-13164
Frequently Asked Questions
What is CVE-2019-13164?
CVE-2019-13164 is a vulnerability in QEMU that allows an ACL bypass.
What is the severity of CVE-2019-13164?
The severity of CVE-2019-13164 is high (severity value: 7).
How does CVE-2019-13164 affect QEMU?
CVE-2019-13164 affects QEMU versions 3.1 and 4.0.0.
How can I fix CVE-2019-13164?
To fix CVE-2019-13164, update QEMU to version 3.1+dfsg-8+deb10u2 or 4.1-1.
Where can I find more information about CVE-2019-13164?
You can find more information about CVE-2019-13164 at the following references: [1](https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00245.html), [2](https://security-tracker.debian.org/tracker/CVE-2019-12164), [3](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12164).
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