CVE ID:	CVE-2016-8622
Description:	The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
Test IDs:	1.3.6.1.4.1.25623.1.1.4.2017.2699.1   1.3.6.1.4.1.25623.1.1.1.2.2016.711   1.3.6.1.4.1.25623.1.1.4.2017.2700.1   1.3.6.1.4.1.25623.1.0.703705
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2016-8622 BugTraq ID: 94105 http://www.securityfocus.com/bid/94105 https://security.gentoo.org/glsa/201701-47 RedHat Security Advisories: RHSA-2018:2486 https://access.redhat.com/errata/RHSA-2018:2486 RedHat Security Advisories: RHSA-2018:3558 https://access.redhat.com/errata/RHSA-2018:3558 http://www.securitytracker.com/id/1037192