CVE-2019-5609: Input Validation
First published: Thu Aug 29 2019(Updated: )
In FreeBSD 12.0-STABLE before r350619, 12.0-RELEASE before 12.0-RELEASE-p9, 11.3-STABLE before r350619, 11.3-RELEASE before 11.3-RELEASE-p2, and 11.2-RELEASE before 11.2-RELEASE-p13, the bhyve e1000 device emulation used a guest-provided value to determine the size of the on-stack buffer without validation when TCP segmentation offload is requested for a transmitted packet. A misbehaving bhyve guest could overwrite memory in the bhyve process on the host.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD FreeBSD | =11.2 | |
| FreeBSD FreeBSD | =11.2-p10 | |
| FreeBSD FreeBSD | =11.2-p11 | |
| FreeBSD FreeBSD | =11.2-p12 | |
| FreeBSD FreeBSD | =11.2-p13 | |
| FreeBSD FreeBSD | =11.2-p2 | |
| FreeBSD FreeBSD | =11.2-p3 | |
| FreeBSD FreeBSD | =11.2-p4 | |
| FreeBSD FreeBSD | =11.2-p5 | |
| FreeBSD FreeBSD | =11.2-p6 | |
| FreeBSD FreeBSD | =11.2-p7 | |
| FreeBSD FreeBSD | =11.2-p8 | |
| FreeBSD FreeBSD | =11.2-p9 | |
| FreeBSD FreeBSD | =11.3 | |
| FreeBSD FreeBSD | =11.3 | |
| FreeBSD FreeBSD | =11.3-p1 | |
| FreeBSD FreeBSD | =11.3-p2 | |
| FreeBSD FreeBSD | =11.3-p3 | |
| FreeBSD FreeBSD | =12.0 | |
| FreeBSD FreeBSD | =12.0-p1 | |
| FreeBSD FreeBSD | =12.0-p3 | |
| FreeBSD FreeBSD | =12.0-p4 | |
| FreeBSD FreeBSD | =12.0-p5 | |
| FreeBSD FreeBSD | =12.0-p8 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-5609?
CVE-2019-5609 has been assessed as having a medium severity level.
How do I fix CVE-2019-5609?
To fix CVE-2019-5609, upgrade to FreeBSD versions 12.0-RELEASE-p9, 11.3-RELEASE-p2, or later versions.
What systems are affected by CVE-2019-5609?
CVE-2019-5609 affects FreeBSD systems including versions 11.2, 11.3, and 12.0 prior to their respective patches.
What type of vulnerability is CVE-2019-5609?
CVE-2019-5609 is a buffer overflow vulnerability in the bhyve e1000 device emulation.
What is bhyve in the context of CVE-2019-5609?
Bhyve is a hypervisor used in FreeBSD that provides virtualization support, and CVE-2019-5609 relates to its e1000 device emulation.
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- version/freebsd freebsd/11.2-p2
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- version/freebsd freebsd/11.2-p4
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- version/freebsd freebsd/11.2-p7
- version/freebsd freebsd/11.2-p8
- version/freebsd freebsd/11.2-p9
- version/freebsd freebsd/11.3
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- version/freebsd freebsd/12.0
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