CVE-2021-28840

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
Null Pointer Dereference vulnerability exists in D-Link DAP-2310 2.07.RC031, DAP-2330 1.07.RC028, DAP-2360 2.07.RC043, DAP-2553 3.06.RC027, DAP-2660 1.13.RC074, DAP-2690 3.16.RC100, DAP-2695 1.17.RC063, DAP-3320 1.01.RC014 and DAP-3662 1.01.RC022 in the upload_config function of sbin/httpd binary. When the binary handle the specific HTTP GET request, the content in upload_file variable is NULL in the upload_config function then the strncasecmp would take NULL as first argument, and incur the NULL pointer dereference vulnerability.
Overview
  • CVE ID
  • CVE-2021-28840
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-10T18:15:07
  • Last Modified Date
  • 2021-08-17T15:01:09
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:dlink:dap-2310_firmware:2.0.7.rc031:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2310:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2330_firmware:1.07.rc028:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2330:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2360_firmware:2.07.rc043:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2360:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2553_firmware:3.06.rc027:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2553:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2660_firmware:1.13.rc074:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2660:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2690_firmware:3.16.rc100:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2690:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-2695_firmware:1.17.rc063:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-2695:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-3320_firmware:1.01.rc014:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-3320:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:dlink:dap-3662_firmware:1.01.rc022:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:dlink:dap-3662:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • 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:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf Exploit Third Party Advisory
https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-28840
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28840
History
Created Old Value New Value Data Type Notes
2022-05-10 06:56:57 Added to TrackCVE
2022-12-05 07:48:51 2021-08-10T18:15Z 2021-08-10T18:15:07 CVE Published Date updated
2022-12-05 07:48:51 2021-08-17T15:01:09 CVE Modified Date updated
2022-12-05 07:48:51 Analyzed Vulnerability Status updated