Google Play and OpenSSL warning message

Question

I just received an email from Google play stating:

Hello,

One or more of your apps is running an outdated version of OpenSSL, which has

Answer 1

I wrote a bash script which will display the OpenSSL versions of anything statically linked in your app and whether TLS heartbeat methods are included.

This worked on a handful of APKs I threw at it. The OpenSSL version string is being specifically extracted with a version number and date. If Google flags the APK and this can't find it, relax the OpenSSL regex in the egrep command to just "OpenSSL" and see where that gets you.

Put the following in a file e.g. testopenssl.sh

usage: ./testopenssl.sh APK_File

#!/bin/bash
sslworkdir="ssl_work_dir"
if [ ! -d $sslworkdir ]; then
  mkdir $sslworkdir
fi
unzip -q "$1" -d $sslworkdir
#Set delimiter to ignore spaces
IFS=$'\r\n'
#Create an array of OpenSSL version strings
opensslarr=($(egrep --binary-files=text -o -R -e "OpenSSL\s\d+\.\d+\.\d+\w+\s\d+\s\w+\s\d+" $sslworkdir/*))
#Stackoverflow syntax highlight fix closing 'block comment' */
if [ ${#opensslarr[@]} -gt 0 ]; then
    echo "Found OpenSSL versions"
    printf "%s\n" "${opensslarr[@]}"
    heartbeatarr=($(grep -R -E "(tls1_process_heartbeat|dtls1_process_heartbeat|dtls1_heartbeat|tls1_hearbeat)" $sslworkdir/*))
    #Stackoverflow syntax highlight fix closing 'block comment' */
    if [ ${#heartbeatarr[@]} -gt 0 ]; then
        echo "Files that contains heartbeat methods:"
    printf "%s\n" "${heartbeatarr[@]}"
    else
        echo "No libraries contain heartbeat methods"
    fi
else
    echo "Did not find OpenSSL"
fi
rm -rf $sslworkdir