Victorian ambulances were painted with anti-violence messages and the government promised tough new laws following a decision to quash the jail sentences of two women who attacked and badly injured a veteran paramedic.

Community outrage met a decision by County Court judge Barbara Cotterell to quash the jail sentences of the two women on Tuesday, with the paramedic injured by the pair saying he felt that his uniform was now a target on his back.

Amanda Warren, 33, and Caris Underwood, 20, had previously been jailed by a magistrate for eight months and four months over the attack on paramedic Paul Judd.

While Premier Daniel Andrews reportedly told union officials on Wednesday that the government would explore "all options" for a possible appeal, it is understood the Director of Public Prosecutions has limited avenues.