CVE-2020-7451

CVSS V2 Medium 5 CVSS V3 Medium 5.3
Description
In FreeBSD 12.1-STABLE before r358739, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r358740, and 11.3-RELEASE before 11.3-RELEASE-p7, a TCP SYN-ACK or challenge TCP-ACK segment over IPv6 that is transmitted or retransmitted does not properly initialize the Traffic Class field disclosing one byte of kernel memory over the network.
Overview
  • CVE ID
  • CVE-2020-7451
  • Assigner
  • secteam@freebsd.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-04-28T20:15:12
  • Last Modified Date
  • 2021-07-21T11:39:23
Weakness Enumerations
CWE URL
CWE-908 http://cwe.mitre.org/data/definitions/908.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: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:12.1:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.asc Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-7451
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7451
History
Created Old Value New Value Data Type Notes
2022-05-10 07:05:35 Added to TrackCVE
2022-12-04 15:52:42 2020-04-28T20:15Z 2020-04-28T20:15:12 CVE Published Date updated
2022-12-04 15:52:42 2021-07-21T11:39:23 CVE Modified Date updated
2022-12-04 15:52:42 Analyzed Vulnerability Status updated