SSL3 issue, decryption failed

Question

The full error msg is following,

error:1408F119:SSL routines:SSL3_GET_RECORD:decryption failed or bad record mac

I encountered this issue in two (seemingly) unrelated settings, and wonder if this is a wide spread problem. How to fix it?

First, this happened when installing sublime text, and then when dropbox is trying to start.

On sublime text, i typed,

sudo add-apt-repository ppa:webupd8team/sublime-text-3;
sudo apt-get update;
sudo apt-get install sublime-text-installer;
sudo ln -s /usr/lib/sublime-text-3/sublime_text /usr/local/bin/sublime;

Details of the sublime install process is as follow,

Get:1 http://ppa.launchpad.net/webupd8team/sublime-text-2/ubuntu/ trusty/main sublime-text all 2.0.2-1~webupd8~3 [9,670 B]
Fetched 9,670 B in 0s (29.1 kB/s)       
Preconfiguring packages ...
Selecting previously unselected package sublime-text.
(Reading database ... 200988 files and directories currently installed.)
Preparing to unpack .../sublime-text_2.0.2-1~webupd8~3_all.deb ...
Downloading...

--2017-06-11 07:50:17--  
https://c758482.ssl.cf2.rackcdn.com/Sublime%20Text%202.0.2%20x64.tar.bz2
Resolving c758482.ssl.cf2.rackcdn.com (c758482.ssl.cf2.rackcdn.com)... 23.60.73.100
Connecting to c758482.ssl.cf2.rackcdn.com (c758482.ssl.cf2.rackcdn.com)|23.60.73.100|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5662968 (5.4M) [application/x-bzip2]
Saving to: ‘Sublime Text 2.0.2 x64.tar.bz2’
0K ........ ..                                           12% 1.69M=0.4s

2017-06-11 07:50:18 (1.69 MB/s) - Read error at byte 699296/5662968 (error:1408F119:SSL routines:SSL3_GET_RECORD:decryption failed or bad record mac). Retrying.

The dropbox issue is after install from deb file using Ubuntu Software Center, I typed,

dropbox start -i

I saw,

Starting Dropbox...[Errno 1] _ssl.c:1429: error:1408F119:SSL 
routines:SSL3_GET_RECORD:decryption failed or bad record mac

Additional Info

This is a new install of ubuntu 14.04. Did a few apt-get update, and I've installed Anaconda 4.4.0. Nothing else.

Ubuntu 14.04 OpenSSL 1.0.2l 25 May 2017 Kernel : 3.19.0-33-generic

Answer 1

I have a fix, but that leaves any explanation even more mysterious. This problem occurred when I connected to the internet via wifi. (It's a home network without proxy.) The wireless modem (Actiontec C1000A) has been in use for at least a year.

The fix is, not to use wifi, but to connect directly to the modem with a network cable. Once connected, this SSL3 issue disappears.

Since I did not have this problem just few days ago, something might have been changed.

Could someone familiar with wireless technology explain what might have gone wrong.