Describe CVE-2015-8077.
What is CVE-2015-8077?
Integer overflow in the index_urlfetch function in imap/index.c in Cyrus IMAP 2.3.19, 2.4.18, and 2.5.6 allows remote attackers to have unspecified impact via vectors related to urlfetch range checks and the start_octet variable.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-8076..