Spark Smart Modem vulnerable?

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r0bbie

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#289033 8-Aug-2021 13:26

Hey Spark's router was listed on a new disclosed router bug - do you think they are affected?

https://www.bleepingcomputer.com/news/security/actively-exploited-bug-bypasses-authentication-on-millions-of-routers/

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Talkiet

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#2757948 10-Aug-2021 13:13

Spark is aware of a security vulnerability (https://www.tenable.com/security/research/tra-2021-13) that is present on one of the modems offered to Spark and Skinny broadband customers (Spark Smart Modem - Arcadyan VRV9517).

We have been advised by Arcadyan that they do not believe the vulnerability could currently be successfully exploited on our Spark and Skinny modems, due to the specific build of our modems. Our own testing supports this. We have been monitoring and blocking attempted attacks from the IP addresses identified by Juniper and while we have seen a low level of attacks since the weekend, we’ve seen no evidence so far of successful exploits against the Spark or Skinny Smart Modems.

We’ve been working with Arcadyan and have been testing a new version of the modem software with a fix for the vulnerability since last week. As soon as this version is ready, it will automatically be pushed out to the relevant Spark and Skinny Smart Modems.

We will provide an update when we have a new version available. For customers that are using the Smart Modems with non-Spark connections, we will make the updated FW with the vulnerabilities fixed available soon. I’ll advise here of the official download location (which will be from a Spark server).

Cheers - Neil G

Please note all comments are from my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.

Talkiet

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#2766320 25-Aug-2021 09:00

Sorry it took so long (but as pointed out the modems are not vulnerable to the attack as the most important vulnerability didn't exist in our device) - but here is the Spark firmware image for the VRV9517 that you can apply if your modem is not on the Spark network.

https://www.spark.co.nz/help/internet/security/spark-smart-modem-firmware-update

If you have a Skinny modem that you are using on a non-Skinny connection, you will need to call in to their Skinny helpdesk. I have been advised that they will make the FW available specifically to those customers that request it, even if you are not a current Skinny customer.

Cheers - N

Please note all comments are from my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.