Netgear DC112A httpd stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.6$5k-$25k0.00

A vulnerability has been found in Netgear DC112A, EX3700, EX3800, EX6120, EX6130, EX7000, EX7500, MR60, MR80, MS60, MS80, LAX20, R6400, R6400v2, R6700v3, R6900P, R7000, R7000P, R7100LG, R7850, R7900P, R7960P, R8000, R8000P, R8300, R8500, RAX15, RAX20, RAX200, RAX35v2, RAX38v2, RAX40v2, RAX42, RAX43, RAX45, RAX48, RAX50, RAX50S, RAX75, RAX80, RAXE450, RAXE500, RS400, WNDR3400v3, WNR3500Lv2, XR1000, XR300, D6220, D6400, D7000v2, DGN2200v4 and V6510-1FXAUS and classified as critical. This vulnerability affects an unknown code of the component httpd. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at zerodayinitiative.com. This vulnerability was named CVE-2021-34982 since 06/17/2021. The exploitation appears to be easy. The attack needs to be initiated within the local network. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/08/2024).

Upgrading eliminates this vulnerability.

Similar entries are available at VDB-252255, VDB-252256, VDB-252257 and VDB-252258.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (Zero Day Initiative): 🔒

CVSSv2info

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

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Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/17/2021 CVE reserved
05/07/2024 +1055 days VulDB entry created
05/08/2024 +0 days Advisory disclosed
05/08/2024 +0 days VulDB entry last update

Sourcesinfo

Vendor: netgear.com

Advisory: ZDI-21-1274
Status: Confirmed

CVE: CVE-2021-34982 (🔒)
See also: 🔒

Entryinfo

Created: 05/08/2024 01:44 AM
Changes: 05/08/2024 01:44 AM (64)
Complete: 🔍
Cache ID: 3:3AE:40

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