CVE-2021-29631

CVSS V2 High 7.2 CVSS V3 High 7.8
Description
In FreeBSD 13.0-STABLE before n246941-20f96f215562, 12.2-STABLE before r370400, 11.4-STABLE before r370399, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, certain VirtIO-based device models in bhyve failed to handle errors when fetching I/O descriptors. A malicious guest may cause the device model to operate on uninitialized I/O vectors leading to memory corruption, crashing of the bhyve process, and possibly arbitrary code execution in the bhyve process.
Overview
  • CVE ID
  • CVE-2021-29631
  • Assigner
  • secteam@freebsd.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-30T18:15:08
  • Last Modified Date
  • 2021-12-14T21:37:46
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:11.4:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p10:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p11:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p12:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p13:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p6:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p7:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p8:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:11.4:p9:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p10:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p3:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p4:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p5:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p6:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p7:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p8:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:12.2:p9:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:13.0:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:* 1 OR
cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:13.bhyve.asc Vendor Advisory
https://security.netapp.com/advisory/ntap-20210923-0004/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29631
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29631
History
Created Old Value New Value Data Type Notes
2022-05-10 06:41:19 Added to TrackCVE
2022-12-05 09:17:26 2021-08-30T18:15Z 2021-08-30T18:15:08 CVE Published Date updated
2022-12-05 09:17:26 2021-12-14T21:37:46 CVE Modified Date updated
2022-12-05 09:17:26 Analyzed Vulnerability Status updated