The reprimand was handed down to him after he hitched a lift to the pits from Fernando Alonso following the Singapore Grand Prix.
He had previously been reprimanded in Bahrain and Canada and the fact that it was his third reprimand meant that under Formula One regulations he was given the automatic grid sanction.
Webber's two previous infringements were for causing a collision with Nico Rosberg at the Bahrain Grand Prix, and for ignoring yellow flags during first free practice at the Canadian Grand Prix.
Alonso was also reprimanded for driving the car "in a manner which could be deemed potentially dangerous to other drivers or any other person".
Stewards noted in a statement, after meeting the drivers and team representatives and examined video evidence, that two cars had to take avoiding action as a result.
However Webber has taken to twitter to voice his frustration at the punishment.
For @alo_oficial and me to receive reprimands for our actions after the race it is comical to say the least.
The Australian, who is set to leave Red Bull at the end of the season, then posted a montage of previous indiscretions similar to his own, which he indicated had gone unpunished.