CVE-2007-5469

DISPUTED OpenSER 1.2.2 does not verify the Digest authentication
header URI against the Request URI in SIP messages, which allows remote
attackers to use sniffed Digest authentication credentials to call
arbitrary telephone numbers or spoof caller ID (aka “toll fraud and
authentication forward attack”). NOTE: Debian disputes this issue, stating
that “having the two URIs mismatch is allowed by the standard and happens
in some setups for valid reasons.”

Notes