Vulnerability Details : CVE-2021-34982
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.
Vulnerability category: OverflowExecute code
Products affected by CVE-2021-34982
Please log in to view affected product information.
Exploit prediction scoring system (EPSS) score for CVE-2021-34982
3.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 86 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34982
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.8
|
HIGH | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
Zero Day Initiative | 2024-05-08 |
CWE ids for CVE-2021-34982
-
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).Assigned by: zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2021-34982
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1274/
ZDI-21-1274 | Zero Day Initiative
-
https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159
Security Advisory for Pre-Authentication Buffer Overflow on Some Extenders, Routers, and DSL Modem Routers, PSV-2021-0159 - NETGEAR Support
Jump to