Old-fashioned attitudes to women are still common among South African men, regardless of colour. However, this doesn't mean sexist behaviour should be tolerated.
There's a high level of sexual assault and other violence against women in South Africa, the majority of which occurs in townships and poor rural areas. Given the HIV/AIDS epidemic, the problem is compounded by the transfer of infection. Some rape victims have escaped infection by persuading the attacker to wear a condom.
For most female visitors, patriarchal attitudes and mildly sleazy behaviour are the main issues. However, there have been incidents of travellers being raped, and women should always take precautions.