CVE-2020-7461

CVSS V2 High 7.5 CVSS V3 High 7.3
Description
In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.
Overview
  • CVE ID
  • CVE-2020-7461
  • Assigner
  • secteam@freebsd.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-03-26T21:15:13
  • Last Modified Date
  • 2021-09-16T16:03:39
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
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
cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* 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
cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p7:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.1:p8:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:siemens:simatic_rf350m_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_rf350m:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_rf650m_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_rf650m:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • LOW
  • Base Score
  • 7.3
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.4
References
Reference URL Reference Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:26.dhclient.asc Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-288459.pdf Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-7461
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7461
History
Created Old Value New Value Data Type Notes
2022-05-10 16:04:55 Added to TrackCVE
2022-12-06 00:33:00 2021-03-26T21:15Z 2021-03-26T21:15:13 CVE Published Date updated
2022-12-06 00:33:00 2021-09-16T16:03:39 CVE Modified Date updated
2022-12-06 00:33:00 Analyzed Vulnerability Status updated