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. It has a CVSS v3.1 base score of 8.8 (HIGH).

CVE-2021-34982 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

CVE-2021-34982 affects products from netgear, specifically: d6220, d6220_firmware, d6400, d6400_firmware, d7000v2, d7000v2_firmware, dc112a, dc112a_firmware, dgn2200v4, dgn2200v4_firmware, ex3700, ex3700_firmware, ex3800, ex3800_firmware, ex6120, ex6120_firmware, ex6130, ex6130_firmware, ex7000, ex7000_firmware, ex7500, ex7500_firmware, lax20, lax20_firmware, mr60, mr60_firmware, mr80, mr80_firmware, ms60, ms60_firmware, ms80, ms80_firmware, r6400, r6400_firmware, r6400v2, r6400v2_firmware, r6700v3, r6700v3_firmware, r6900p, r6900p_firmware, r7000, r7000_firmware, r7000p, r7000p_firmware, r7100lg, r7100lg_firmware, r7850, r7850_firmware, r7900p, r7900p_firmware, r7960p, r7960p_firmware, r8000, r8000_firmware, r8000p, r8000p_firmware, r8300, r8300_firmware, r8500, r8500_firmware, rax15, rax15_firmware, rax20, rax200, rax200_firmware, rax20_firmware, rax35v2, rax35v2_firmware, rax38v2, rax38v2_firmware, rax40v2, rax40v2_firmware, rax42, rax42_firmware, rax43, rax43_firmware, rax45, rax45_firmware, rax48, rax48_firmware, rax50, rax50_firmware, rax50s, rax50s_firmware, rax75, rax75_firmware, rax80, rax80_firmware, raxe450, raxe450_firmware, raxe500, raxe500_firmware, rs400, rs400_firmware, v6510-1fxaus, v6510-1fxaus_firmware, wndr3400v3, wndr3400v3_firmware, wnr3500lv2, wnr3500lv2_firmware, xr1000, xr1000_firmware, xr300, xr300_firmware. Check the affected products table above for specific version ranges.

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.