CVE-2020-35795

30.12.2020, 00:15

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects AC2100 before 1.2.0.72, AC2400 before 1.2.0.72, AC2600 before 1.2.0.72, CBK40 before 2.5.0.10, CBR40 before 2.5.0.10, D7800 before 1.0.1.58, EAX20 before 1.0.0.36, EAX80 before 1.0.1.62, EX7500 before 1.0.0.68, MK62 before 1.0.5.102, MR60 before 1.0.5.102, MS60 before 1.0.5.102, R6120 before 1.0.0.70, R6220 before 1.1.0.100, R6230 before 1.1.0.100, R6260 before 1.1.0.76, R6330 before 1.1.0.76, R6350 before 1.1.0.76, R6400 before 1.0.1.62, R6400v2 before 1.0.4.98, R6700 before 1.0.2.16, R6700v2 before 1.2.0.72, R6700v3 before 1.0.4.98, R6800 before 1.2.0.72, R6850 before 1.1.0.76, R6900P before 1.3.2.124, R6900 before 1.0.2.16, R6900v2 before 1.2.0.72, R7000 before 1.0.11.106, R7000P before 1.3.2.124, R7200 before 1.2.0.72, R7350 before 1.2.0.72, R7400 before 1.2.0.72, R7450 before 1.2.0.72, R7800 before 1.0.2.74, R7850 before 1.0.5.60, R7900 before 1.0.4.26, R7900P before 1.4.1.62, R7960P before 1.4.1.62, R8000 before 1.0.4.58, R8000P before 1.4.1.62, R8900 before 1.0.5.24, R9000 before 1.0.5.24, RAX120 before 1.0.1.136, RAX15 before 1.0.1.64, RAX20 before 1.0.1.64, RAX200 before 1.0.2.102, RAX45 before 1.0.2.64, RAX50 before 1.0.2.64, RAX75 before 1.0.3.102, RAX80 before 1.0.3.102, RBK12 before 2.6.1.44, RBR10 before 2.6.1.44, RBS10 before 2.6.1.44, RBK20 before 2.6.1.38, RBR20 before 2.6.1.36, RBS20 before 2.6.1.38, RBK40 before 2.6.1.38, RBR40 before 2.6.1.36, RBS40 before 2.6.1.38, RBK50 before 2.6.1.40, RBR50 before 2.6.1.40, RBS50 before 2.6.1.40, RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK842 before 3.2.16.6, RBR840 before 3.2.16.6, RBS840 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, RBS850 before 3.2.16.6, RS400 before 1.5.0.48, XR300 before 1.0.3.50, XR450 before 2.3.2.66, XR500 before 2.3.2.66, and XR700 before 1.0.1.34.

Classic Buffer Overflow

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitre	CNA	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 67%

Vendor	Product	Version
netgear	ac2100_firmware	𝑥 < 1.2.0.72
netgear	ac2400_firmware	𝑥 < 1.2.0.72
netgear	ac2600_firmware	𝑥 < 1.2.0.72
netgear	cbk40_firmware	𝑥 < 2.5.0.10
netgear	cbr40_firmware	𝑥 < 2.5.0.10
netgear	d7800_firmware	𝑥 < 1.0.1.58
netgear	eax20_firmware	𝑥 < 1.0.0.36
netgear	eax80_firmware	𝑥 < 1.0.1.62
netgear	ex7500_firmware	𝑥 < 1.0.0.68
netgear	mk62_firmware	𝑥 < 1.0.5.102
netgear	mr60_firmware	𝑥 < 1.0.5.102
netgear	ms60_firmware	𝑥 < 1.0.5.102
netgear	r6120_firmware	𝑥 < 1.0.0.70
netgear	r6220_firmware	𝑥 < 1.1.0.100
netgear	r6230_firmware	𝑥 < 1.1.0.100
netgear	r6260_firmware	𝑥 < 1.1.0.76
netgear	r6330_firmware	𝑥 < 1.1.0.76
netgear	r6350_firmware	𝑥 < 1.1.0.76
netgear	r6400_firmware	𝑥 < 1.0.1.62
netgear	r6400v2_firmware	𝑥 < 1.0.4.98
netgear	r6700_firmware	𝑥 < 1.0.2.16
netgear	r6700v2_firmware	𝑥 < 1.2.0.72
netgear	r6700v3_firmware	𝑥 < 1.0.4.98
netgear	r6800_firmware	𝑥 < 1.2.0.72
netgear	r6850_firmware	𝑥 < 1.1.0.76
netgear	r6900p_firmware	𝑥 < 1.3.2.124
netgear	r6900_firmware	𝑥 < 1.0.2.16
netgear	r6900v2_firmware	𝑥 < 1.2.0.72
netgear	r7000_firmware	𝑥 < 1.0.11.106
netgear	r7000p_firmware	𝑥 < 1.3.2.124
netgear	r7200_firmware	𝑥 < 1.2.0.72
netgear	r7350_firmware	𝑥 < 1.2.0.72
netgear	r7400_firmware	𝑥 < 1.2.0.72
netgear	r7450_firmware	𝑥 < 1.2.0.72
netgear	r7800_firmware	𝑥 < 1.0.2.74
netgear	r7850_firmware	𝑥 < 1.0.5.60
netgear	r7900_firmware	𝑥 < 1.0.4.26
netgear	r7900p_firmware	𝑥 < 1.4.1.62
netgear	r7960p_firmware	𝑥 < 1.4.1.62
netgear	r8000_firmware	𝑥 < 1.0.4.58
netgear	r8000p_firmware	𝑥 < 1.4.1.62
netgear	r8900_firmware	𝑥 < 1.0.5.24
netgear	r9000_firmware	𝑥 < 1.0.5.24
netgear	rax120_firmware	𝑥 < 1.0.1.136
netgear	rax15_firmware	𝑥 < 1.0.1.64
netgear	rax20_firmware	𝑥 < 1.0.1.64
netgear	rax200_firmware	𝑥 < 1.0.2.102
netgear	rax45_firmware	𝑥 < 1.0.2.64
netgear	rax50_firmware	𝑥 < 1.0.2.64
netgear	rax75_firmware	𝑥 < 1.0.3.102
netgear	rax80_firmware	𝑥 < 1.0.3.102
netgear	rbk12_firmware	𝑥 < 2.6.1.44
netgear	rbr10_firmware	𝑥 < 2.6.1.44
netgear	rbs10_firmware	𝑥 < 2.6.1.44
netgear	rbk20_firmware	𝑥 < 2.6.1.38
netgear	rbr20_firmware	𝑥 < 2.6.1.36
netgear	rbs20_firmware	𝑥 < 2.6.1.38
netgear	rbk40_firmware	𝑥 < 2.6.1.38
netgear	rbr40_firmware	𝑥 < 2.6.1.36
netgear	rbs40_firmware	𝑥 < 2.6.1.38
netgear	rbk50_firmware	𝑥 < 2.6.1.40
netgear	rbr50_firmware	𝑥 < 2.6.1.40
netgear	rbs50_firmware	𝑥 < 2.6.1.40
netgear	rbk752_firmware	𝑥 < 3.2.16.6
netgear	rbr750_firmware	𝑥 < 3.2.16.6
netgear	rbs750_firmware	𝑥 < 3.2.16.6
netgear	rbk842_firmware	𝑥 < 3.2.16.6
netgear	rbr840_firmware	𝑥 < 3.2.16.6
netgear	rbs840_firmware	𝑥 < 3.2.16.6
netgear	rbk852_firmware	𝑥 < 3.2.16.6
netgear	rbr850_firmware	𝑥 < 3.2.16.6
netgear	rbs850_firmware	𝑥 < 3.2.16.6
netgear	rs400_firmware	𝑥 < 1.5.0.48
netgear	xr300_firmware	𝑥 < 1.0.3.50
netgear	xr450_firmware	𝑥 < 2.3.2.66
netgear	xr500_firmware	𝑥 < 2.3.2.66
netgear	xr700_firmware	𝑥 < 1.0.1.34

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

References

https://kb.netgear.com/000062735/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Range-Extenders-and-Orbi-WiFi-Systems-PSV-2020-0154