CVE-2021-37748

CVSS V2 High 9 CVSS V3 High 8.8
Description
Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.
Overview
  • CVE ID
  • CVE-2021-37748
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-28T12:15:08
  • Last Modified Date
  • 2021-11-03T14:00:49
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:grandstream:ht801_firmware:*:*:*:*:*:*:*:* 1 OR 1.0.29
cpe:2.3:h:grandstream:ht801:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9
  • Severity
  • HIGH
  • Exploitability Score
  • 8
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 Product Vendor Advisory
https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ Exploit Third Party Advisory
https://github.com/SECFORCE/CVE-2021-37748 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-37748
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37748
History
Created Old Value New Value Data Type Notes
2022-05-10 06:48:37 Added to TrackCVE
2022-12-05 13:23:29 2021-10-28T12:15Z 2021-10-28T12:15:08 CVE Published Date updated
2022-12-05 13:23:29 2021-11-03T14:00:49 CVE Modified Date updated
2022-12-05 13:23:29 Analyzed Vulnerability Status updated