CVE-2020-7462

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
Description
In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.
Overview
  • CVE ID
  • CVE-2020-7462
  • Assigner
  • secteam@freebsd.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-03-26T21:15:13
  • Last Modified Date
  • 2021-04-02T18:11:50
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p11:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p12:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* 1 OR
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://security.FreeBSD.org/advisories/FreeBSD-SA-20:24.ipv6.asc Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-7462
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7462
History
Created Old Value New Value Data Type Notes
2022-05-10 07:17:23 Added to TrackCVE
2022-12-06 00:33:05 2021-03-26T21:15Z 2021-03-26T21:15:13 CVE Published Date updated
2022-12-06 00:33:05 2021-04-02T18:11:50 CVE Modified Date updated
2022-12-06 00:33:05 Analyzed Vulnerability Status updated