Buffer overflow in FreeBSD
CVE-2020-7458
In FreeBSD 12.1-STABLE before r362281, 11.4-STABLE before r362281, and 11.4-RELEASE before p1, long values in the user-controlled PATH environment variable cause posix_spawnp to write beyond the end of the heap allocated stack possibly leading to arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- FreeBSD — versions 11.4, 12.1
- FreeBSD — versions FreeBSD 11.4-RELEASE before p1
Weakness classification (CWE)
References
- security.FreeBSD.org/advisories/FreeBSD-SA-20:18.posix_spawnp.asc (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200724-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7458?
- CVE-2020-7458 is a critical-severity vulnerability in FreeBSD, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-07-09.
- How severe is CVE-2020-7458?
- Critical severity. CVSS v3 base score is 9.8 out of 10.