Buffer overflow in FreeBSD
CVE-2019-5609
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- FreeBSD — versions 11.2, 11.3, 12.0
- FreeBSD — versions before 12.0-RELEASE-p9, before 11.3-RELEASE-p2, and before 11.2-RELEASE-p13
Weakness classification (CWE)
References
- security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20190910-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5609?
- CVE-2019-5609 is a high-severity vulnerability in FreeBSD, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2019-08-30.
- How severe is CVE-2019-5609?
- High severity. CVSS v3 base score is 7.5 out of 10.