CVE-2019-13164
Published: 3 July 2019
qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.
From the Ubuntu Security Team
Riccardo Schirone discovered that the QEMU bridge helper did not properly validate network interface names. A local attacker could possibly use this to bypass ACL restrictions.
Notes
Author | Note |
---|---|
sbeattie | qemu-bridge-helper.c does not exist in precise's qemu package |
Priority
Status
Package | Release | Status |
---|---|---|
qemu Launchpad, Ubuntu, Debian |
bionic |
Released
(1:2.11+dfsg-1ubuntu7.20)
|
cosmic |
Ignored
(end of life)
|
|
disco |
Released
(1:3.1+dfsg-2ubuntu3.6)
|
|
eoan |
Released
(1:4.0+dfsg-0ubuntu9.1)
|
|
trusty |
Released
(2.0.0+dfsg-2ubuntu1.47)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(1:4.1-1)
|
|
xenial |
Released
(1:2.5+dfsg-5ubuntu10.42)
|
|
Patches: upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=6f5d8671225dc77190647f18a27a0d156d4ca97a |
||
qemu-kvm Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
cosmic |
Does not exist
|
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13164
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00145.html
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00245.html
- http://www.openwall.com/lists/oss-security/2019/07/02/2
- https://ubuntu.com/security/notices/USN-4191-1
- https://ubuntu.com/security/notices/USN-4191-2
- NVD
- Launchpad
- Debian