Security update now also for Powerline models

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In addition to the new update for the Fritz boxes, there are from Herstels AVM also new software for the older Fritz WLAN Repeater 450E and WLAN Repeater 1160 as well as the Powerline models 546E and 1240E.

While the manufacturer AVM is already playing out the FritzOS update 7.29 for various devices, there is an important security update for the older Fritz WLAN repeaters 450E and 1160 with version number 7.14, which at first glance seems out of date.

According to the manufacturer, the update fixes vulnerabilities in so-called “Fragattack”. It deals with the handling of incoming fragmented packets as well as aggregated MPDUs (A-MPDU). In May 2021, after discovering the problem, AVM said:

“Today (note: May 11, 2021) security researchers drew attention to the WLAN vulnerability“ FragAttacks ”. The vulnerability is manufacturer-independent and affects many WLAN devices such as smartphones, notebooks, routers or game consoles. Unauthorized use of FragAttacks is not known and could only take place in the immediate vicinity of the WLAN. The security of services such as mail or apps that use TLS encryption or of Internet connections via HTTPS sites is not affected by the vulnerability. According to the current state of knowledge, practical effects of FragAttacks are unlikely. “

The older Fritz WLAN repeater model 310 already received a security patch with the same identifier in October.

FritzOS 7.14: The security update

  • Fixed Fixed weaknesses in the handling of incoming fragmented packets and aggregated MPDUs (A-MPDU) (“Fragattack”)
  • improvement Update of Trusted Root Certification Authorities

Updates for Powerline

Since January 6th, the FritzOS 7.14 is also available for the Fritz Powerline 546E and 1240E. In addition to improved stability in the new features, the focus here is also on eliminating the weak points around the “Fragattack”. The features also include the update of trusted root certification authorities, as can be found on the provider’s website.

Older Fritzbox models also updated

The older Fritzbox models 7360 v2 and 7390 received the FritzOS update to version 6.87 last year. The Fritzbox 3272 and 7272, however, received version 6.88.

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What: AVM


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