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vulnrichmentZdiVULNRICHMENT:CVE-2024-6146
HistoryJun 18, 2024 - 11:39 p.m.

CVE-2024-6146 Actiontec WCB6200Q uh_get_postdata_withupload Stack-based Buffer Overflow Remote Code Execution Vulnerability

2024-06-1823:39:06
CWE-121
zdi
github.com
2
cve-2024-6146
actiontec wcb6200q
stack-based buffer overflow
remote code execution
vulnerability
http server
authentication

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.8

Confidence

High

SSVC

Exploitation

none

Automatable

no

Technical Impact

partial

Actiontec WCB6200Q uh_get_postdata_withupload Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21418.

CNA Affected

[
  {
    "vendor": "Actiontec",
    "product": "WCB6200Q",
    "versions": [
      {
        "status": "affected",
        "version": "1.2L.03.5"
      }
    ],
    "defaultStatus": "unknown"
  }
]

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.8

Confidence

High

SSVC

Exploitation

none

Automatable

no

Technical Impact

partial

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