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vulnrichmentZdiVULNRICHMENT:CVE-2021-34982
HistoryMay 07, 2024 - 10:54 p.m.

CVE-2021-34982 NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability

2024-05-0722:54:50
CWE-121
zdi
github.com
11
netgear
routers
httpd
stack-based
buffer overflow
vulnerability
remote code execution

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

7.9

Confidence

High

EPSS

0.001

Percentile

16.2%

SSVC

Exploitation

none

Automatable

no

Technical Impact

total

NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate 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 root.

. Was ZDI-CAN-13709.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:o:netgear:multiple_router_firmware:1.0.11.116_10.0.100:*:*:*:*:*:*:*"
    ],
    "vendor": "netgear",
    "product": "multiple_router_firmware",
    "versions": [
      {
        "status": "affected",
        "version": "1.0.11.116_10.0.100"
      }
    ],
    "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

7.9

Confidence

High

EPSS

0.001

Percentile

16.2%

SSVC

Exploitation

none

Automatable

no

Technical Impact

total

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