According to Newsweek:
[Karl] Rove’s words on the [Valerie] Plame case have always been carefully chosen. “I didn’t know her name. I didn’t leak her name,” Rove told CNN last year when asked if he had anything to do with the Plame leak. Rove has never publicly acknowledged talking to any reporter about former ambassador Joseph Wilson and his wife. But last week, his lawyer, Robert Luskin, confirmed to NEWSWEEK that Rove did—and that Rove was the secret source who, at the request of both Cooper’s lawyer and the prosecutor, gave Cooper permission to testify…. [Matt] Cooper wrote that Rove offered him a “big warning” not to “get too far out on Wilson.” Rove told Cooper that Wilson’s trip had not been authorized by “DCIA”—CIA Director George Tenet—or Vice President Dick Cheney. Rather, “it was, KR said, wilson’s wife, who apparently works at the agency on wmd [weapons of mass destruction] issues who authorized the trip.” Wilson’s wife is Plame, then an undercover agent working as an analyst in the CIA’s Directorate of Operations counterproliferation division.