CVE-2020-24863

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
Description
A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.
Overview
  • CVE ID
  • CVE-2020-24863
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-09-03T15:15:11
  • Last Modified Date
  • 2020-09-11T14:03:48
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:* 1 OR 1.2.7
cpe:2.3:a:midnightbsd:midnightbsd:*:*:*:*:*:*:*:* 1 OR 1.3 2020-08-19
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* 1 OR 11.4
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c Exploit Third Party Advisory
https://www.midnightbsd.org/notes/ Release Notes Vendor Advisory
http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt Exploit Vendor Advisory
https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-24863
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24863
History
Created Old Value New Value Data Type Notes
2022-05-10 16:24:38 Added to TrackCVE
2022-12-04 21:59:26 2020-09-03T15:15Z 2020-09-03T15:15:11 CVE Published Date updated
2022-12-04 21:59:26 2020-09-11T14:03:48 CVE Modified Date updated
2022-12-04 21:59:26 Analyzed Vulnerability Status updated