High severity · published Aug 30, 2019
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…
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freebsd · Freebsd
11.2; 11.2; 11.2; 11.2; 11.2; 11.2; +18 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-5609
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-5609
Patch
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc
Third Party Advisory
https://security.netapp.com/advisory/ntap-20190910-0002/
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