Buffer overflow in FreeBSD
CVE-2020-7456
In FreeBSD 12.1-STABLE before r361918, 12.1-RELEASE before p6, 11.4-STABLE before r361919, 11.3-RELEASE before p10, and 11.4-RC2 before p1, an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- FreeBSD — versions 11.3, 11.4, 12.1
- NetApp Clustered Data Ontap
- FreeBSD — versions FreeBSD 12.1-RELEASE before p6, 11.3-RELEASE before p10, and 11.4-RC2 before p1
Weakness classification (CWE)
References
- security.FreeBSD.org/advisories/FreeBSD-SA-20:17.usb.asc (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200625-0005/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7456?
- CVE-2020-7456 is a medium-severity vulnerability in FreeBSD, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.8/10. Published 2020-06-09.
- How severe is CVE-2020-7456?
- Medium severity. CVSS v3 base score is 6.8 out of 10.