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[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

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[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

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tplink

2017-10-17 11:29:42

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Registered: 2012-03-28

[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2017-10-17 11:29:42

Dear All,

On October 16th, 2017, an security researcher has disclosed some severe flaws in the WPA2 security protocol.

Description of the vulnerability
The vulnerability that known as "KRACK", short for Key Reinstallation Attack, will target the four-way handshake of the WPA2 protocol. Mathy Vanhoef, who published the flaw, said that the flaw may allow an attacker within the Wi-Fi range to decrypt network traffic from a WPA2-enabled device, hijack connections, and inject content into the traffic stream.
The publisher also points out that, the main attack is against the 4-way handshake, and does not exploit access points, but instead targets clients. So it might be that your router does not require security updates.
For more details, please refer to the below article published by Vanhoef:
https://www.krackattacks.com/

The following Common Vulnerabilities and Exposures (CVE) identifiers were assigned to track which products are affected by specific instantiations of the key reinstallation attack:CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13084, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088

TP-Link is aware of the vulnerabilities (KRACKs) in the WPA-2 protocol. We have published a security advisory on the official website and are working to solve the problems now.
Security Advisory: http://www.tp-link.com/en/faq-1970.html
[FONT=&]Software updates for the affected devices will be post at http://www.tp-link.com/support.html over the next few weeks.[/FONT]
Your network security is highly regarded by TP-Link.

Clarification for the WPA2 Vulnerabilities:
1. Please have a look at the article published by Mathy Vanhoef and pay attention to the QA listed at the end:
Q: What if there are no security updates for my router?
A: Our main attack is against the 4-way handshake, and does not exploit access points, but instead targets clients. So it might be that your router does not require security updates. We strongly advise you to contact your vendor for more details. In general though, you can try to mitigate attacks against routers and access points by disabling client functionality (which is for example used in repeater modes) and disabling 802.11r (fast roaming). For ordinary home users, your priority should be updating clients such as laptops and smartphones.

From the QA, we can get clear that the vulnerabilities only targets the devices act as Wi-Fi clients, including laptops, smartphones, range extenders working in RE mode, routers/gateways working in RE/WDS/WISP mode.
Thus if you're using the following TP-Link products:
(Unaffected Devices)
# All powerline adapters
# All mobile Wi-Fi products
# Routers and gateways working on default Router mode or Access Point mode
# Range extenders working in AP mode
You will not be affected by the WPA2 vulnerabilities. What you need to do is updating your Wi-Fi clients.

2. Conditions under which devices are vulnerable:
# Physical proximity: An attack can only happen when an attacker is in physical proximity to and within wireless range of your network.
# Time window: An attack can only happen when a client is connecting or reconnecting to a Wi-Fi network.

Devices affected by the vulnerability
Routers working in Repeater Mode/WISP Mode/Client Mode：

TL-WR940N with firmware version 3.17.1 Build 170717 Rel.55495n or earlier (Hardware Version 3.0 or earlier not affected)
[FONT=verdana]TL-WR841Nv13 with firmware version 0.9.1 4.16 v0348.0 Build 170814 Rel.59214n or earlier (Hardware Version 12.0 or earlier not affected)
TL-WR840N with firmware version 0.9.1 4.16 v019a.0 Build 170524 Rel.56478n or earlier (Hardware Version 2.0 or earlier not affected)
TL-WR941HP with firmware version 3.16.9 Build 20170116 Rel.50912n or earlier
TL-WR841HP with firmware version 3.16.9 Build 160612 Rel.67073n or earlier
TL-WR902AC with firmware version 3.16.9 Build 20160905 Rel.61455n or earlier
TL-WR802N with firmware version 0.9.1 3.16 v0188.0 Build 170705 Rel.34179n or earlier
TL-WR810N with firmware version 3.16.9 Build 160801 Rel.57365n or earlier
Routers with WDS function enabled (disabled by default) may be affected. Refer to the [COLOR=#0000ff]FAQ to learn how to check if WDS is enabled on your router.

Range Extenders working in Repeater Mode during a WPA2 handshake that is initiated only when connecting or reconnecting to a router:
TL-WA850RE with firmware version 1.0.0 Build 20170609 Rel.34153 or earlier
TL-WA855RE with firmware version 1.0.0 Build 20170609 Rel.36187 or earlier
TL-WA860RE with firmware version 1.0.0 Build 20170609 Rel.38491 or earlier
RE200 with firmware version 1.1.3 Build 20170818 Rel.58183 or earlier
RE210 with firmware version 3.14.2 Build 160623 Rel.43391n or earlier
RE305 with firmware version 1.0.0 Build 20170614 Rel.42952 or earlier
RE450 with firmware version 1.0.2 Build 20170626 Rel.60833 or earlier
RE500 with firmware version 1.0.1 Build20170210 Rel.59671 or earlier
RE650 with firmware version 1.0.2 Build 20170524 Rel.58598 or earlier

Wireless Adapters:
Archer T6E
Archer T9E

Whole Home Wi-Fi System:
Deco M5 with firmware version 1.1.5 Build 20170820 Rel.62483 or earlier

CPE/WBS/CAP:
CAP300 with firmware version 1.1.0 Build 20170601 Rel.60253 or earlier
CAP300-Outdoor with firmware version 1.1.0 Build 20170601 Rel.60212 or earlier
CAP1750 with firmware version 1.1.0 Build 20170601 Rel.60196 or earlier
CAP1200 with firmware version 1.0.0 Build 20170801 Rel.61314 or earlier
TL-ER604W with firmware version 1.2.0 Build 20160825 Rel.45880 or earlier
CPE520 with firmware version 2.1.6 Build 20170908 Rel.45234 or earlier
CPE610 with firmware version 2.1.5 Build 20170830 Rel. 58245 or earlier
CPE510 with firmware version 2.1.6 Build 20170908 Rel. 45233 or earlier
CPE220 with firmware version 2.1.6 Build 20170908 Rel. 45233 or earlier
CPE210 with firmware version 2.1.6 Build 20170908 Rel. 45234 or earlier
WBS210 with firmware version 2.1.0 Build 20170609 Rel. 57434 or earlier
WBS510 with firmware version 2.1.6 Build 20170908 Rel. 45234 or earlier

Smart home devices:
Smart Plugs and Switch: HS100，HS105，HS110，HS200
Smart Repeater with Plugs: RE350K，RE270K，RE370K
Cameras: NC250，NC260，NC450, KC120
[/FONT]
How to protect your devices
Until a software update is available to eliminate the vulnerability for your product, it is recommended to take the following precautions:
For wireless routers: Make sure your routers are in Router Mode or AP Mode, and patch the operating system of your smartphones, tablets and computers.
For wireless adapters: Patch the operating system of your computers.
Microsoft security update: Microsoft has fixed such security issues as mentioned in https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-13080

TP-Link has been working on affected models and will release firmware over the next few weeks on our official website.

Reversion History
2017-10-17: Initial release
2017-10-18: Updated some clarifications for the WPA2 vulnerabilities
2017-10-18: Updated the list of affected devices

149 Reply

casaschi

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2017-12-21 00:12:45

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Registered: 2017-11-11

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2017-12-21 00:12:45

dph3055 wrote

It just isn't cost effective to rewrite firmware changes to address Krack for all of their equipment in use. More profit in getting those concerned to buy a new router.

Do you really think that if I'm concerned about the vulnerability of my TP-Link wifi range extender I would ever consider buying a newer one from TP-Link? I might end with buying a new wifi range extender, but you can be sure it will NOT be a TP-Link. And my next router also. Once you lose confidence in a supplier over a security/support issue there's no way back.

#134

bld522

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2017-12-22 00:14:44

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Registered: 2017-10-17

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2017-12-22 00:14:44

casaschi wrote

Do you really think that if I'm concerned about the vulnerability of my TP-Link wifi range extender I would ever consider buying a newer one from TP-Link? I might end with buying a new wifi range extender, but you can be sure it will NOT be a TP-Link. And my next router also. Once you lose confidence in a supplier over a security/support issue there's no way back.

There's that, of course. But being a defendant in a class-action lawsuit is costly, believe me. And I suspect that failing to provide protection against security vulnerabilities in "legacy" equipment isn't going to go well with a jury . . . particularly if the equipment in question is still being manufactured and not really legacy equipment at all. For example:

https://www.amazon.com/TP-Link-Extender-Extends-Throughput-RE200/dp/B00NR2VMNC

#135

raniacaeli

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2017-12-22 15:02:36

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Registered: 2017-12-22

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2017-12-22 15:02:36

thx for this info.....visit my web : http://www.slebritibola.com/

#136

SFCable

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2017-12-26 16:59:30

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Registered: 2017-12-25

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2017-12-26 16:59:30

Its really great if you can update your database queries to fix the query based errors, Actually I am also facing issues for the same. Rather I would go for updating it as suggested by bimbam.

#137

andresp

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2018-01-05 03:02:15

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Registered: 2018-01-05

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2018-01-05 03:02:15

So is [FONT=verdana]TL-WR841N v9 not affected when running in WDS bridging mode?
What about TL-WA730RE v1? It's a range extender and it's not in your list (affected or not affected). Is it affected or not?
[/FONT]

#138

ppilihp

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2018-01-08 03:54:59

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Registered: 2017-09-19

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2018-01-08 03:54:59

tjeyy wrote

Getting a bit tiresome to refresh http://www.tp-link.com/download/RE210.html#Firmware :(

Same here:

http://www.tp-link.de/download/AC500.html#Firmware
http://www.tp-link.de/download/CAP1750.html#Firmware
http://www.tp-link.de/download/CAP300-Outdoor.html#Firmware

...and these are products from TP-Links "business line".

#139

twt

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2018-02-13 12:03:38

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Registered: 2015-04-07

Thanks to TP-Link

2018-02-13 12:03:38

I'm extremely gratified to note that the 17 January 2018 firmware update for my Archer C7 says it fixes the KRACK vulnerability. NOTE you will want to verify that you download the firmware for your specific hardware version (mine is an older v2).

#140

timp

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2018-02-13 18:46:17

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Registered: 2017-10-17

Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2018-02-13 18:46:17

Only for US version so far

twt wrote

I'm extremely gratified to note that the 17 January 2018 firmware update for my Archer C7 says it fixes the KRACK vulnerability. NOTE you will want to verify that you download the firmware for your specific hardware version (mine is an older v2).

#141

JPT

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2018-02-14 01:36:50

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Re:[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

2018-02-14 01:36:50

timp wrote

Only for US version so far

And the V3 is still a couple years down-level. Likely will never be updated. Time to upgrade to an actual supported router vendor or bite the bullet and load 3rd party firmware to eliminate this poor support.

#142

RichSad

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2018-02-14 05:14:59

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Registered: 2017-10-17

Archer C3150 v1 hardware NO fixes

2018-02-14 05:14:59

The latest firmware I see listed is from 2016. Yet I see TP-Link listed repeatedly in "vendors affected by KRACK." There must be a fix coming. It's been half a year almost!

#143

[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

[Security Flaws] Severe flaws called "KRACK" are discovered in the WPA2 protocol

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