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Vulnerability (Sweet32)
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complex1 Offline
3CX Adv. Cert. Engineer

Posts: 1,488
Joined: Jan 2014
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Post: #4
RE: Vulnerability (Sweet32)
(04-19-2022 10:35 PM)Lilpombo Wrote:  
(04-13-2022 04:08 PM)complex1 Wrote:  
(04-13-2022 02:39 AM)Lilpombo Wrote:  Hello, guys!

We did some vulnerability scans in our environment and found a vulnerability called "SWEET32" on some Yealink phones. I've updated the firmware to the last version and nothing ...

Has anyone been through this? Can you guys help me? What can I do to solve this?


Do not use DES, 3DES, IDEA or RC2 as the symmetric encryption cipher, upgrade the firmware or replace the phones for newer ones.

Hi, very thanks for the reply.

The firmware is already updated. I'm trying to adding a line on the cfg file of the phone. see:

sip.tls_cipher_list = AES:!ADH:!LOW:!EXPORT:!NULL
security.tls_cipher_list = AES:!ADH:!LOW:!EXPORT:!NULL
static.security.default_ssl_method = 5

I found in this forum someone with similar problem... He made this alteration and solve the problem. But my new problem is: Import of local config files has no effect

I export a local config file (CFG File, I chose Local in the dropdown) via the phones web interfacce
I edit the file
I import the file (same filename as before)
I ok the prompt that the phone should import the new file
the phone is busy and rebooting
none of the changes I made take effect (I reexport the local config file and it hasn't changed

To me it looks like the import feature is not working for CFG files

Any ideas? Anybody successfully used this feature?


Are you referring to the question regarding the W52P/W56P models in this post?

Kind regards,

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04-19-2022 11:28 PM
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Messages In This Thread
Vulnerability (Sweet32) - Lilpombo - 04-13-2022, 02:39 AM
RE: Vulnerability (Sweet32) - complex1 - 04-13-2022, 04:08 PM
RE: Vulnerability (Sweet32) - Lilpombo - 04-19-2022, 10:35 PM
RE: Vulnerability (Sweet32) - complex1 - 04-19-2022 11:28 PM
RE: Vulnerability (Sweet32) - Lilpombo - 04-20-2022, 12:31 AM
RE: Vulnerability (Sweet32) - complex1 - 04-20-2022, 02:30 AM
RE: Vulnerability (Sweet32) - Lilpombo - 07-18-2022, 08:58 PM
RE: Vulnerability (Sweet32) - Lilpombo - 08-10-2022, 10:10 PM
RE: Vulnerability (Sweet32) - complex1 - 08-11-2022, 03:08 AM

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