Vulnerability in FreeBSD
CVE-2020-7460
In FreeBSD 12.1-STABLE before r363918, 12.1-RELEASE before p8, 11.4-STABLE before r363919, 11.4-RELEASE before p2, and 11.3-RELEASE before p12, the sendmsg system call in the compat32 subsystem on 64-bit platforms has a time-of-check to time-of-use vulnerability allowing a mailcious userspace program to modify control message headers after they were validation.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- FreeBSD — versions 11.3, 11.4, 12.1
- FreeBSD — versions FreeBSD 12.1-RELEASE before p8, 11.4-RELEASE before p2, 11.3-RELEASE before p12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.FreeBSD.org/advisories/FreeBSD-SA-20:23.sendmsg.asc (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-949/ (VDB Entry, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200821-0005/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7460?
- CVE-2020-7460 is a high-severity vulnerability in FreeBSD, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2020-08-06.
- How severe is CVE-2020-7460?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2020-7460 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.