Man-in-the-Middle (MitM)

firefox/thunderbird is vulnerable to man-in-the-middle attacks. The address bar can be spoofed by operating a proxy server that provides a 407 HTTP status code accompanied by a malicious web script...

CVE-2015-4334

The default configuration of SGOS in Blue Coat ProxySG before 6.2.16.5, 6.5 before 6.5.7.1, and 6.6 before 6.6.2.1 forwards authentication challenges from upstream origin content servers OCS when used in an explicit proxy deployment, which makes it easier for remote attackers to obtain sensitive...

Default configuration

The default configuration of SGOS in Blue Coat ProxySG before 6.2.16.5, 6.5 before 6.5.7.1, and 6.6 before 6.6.2.1 forwards authentication challenges from upstream origin content servers OCS when used in an explicit proxy deployment, which makes it easier for remote attackers to obtain sensitive...

CVE-2015-1229

net/http/proxyclientsocket.cc in Google Chrome before 41.0.2272.76 does not properly handle a 407 aka Proxy Authentication Required HTTP status code accompanied by a Set-Cookie header, which allows remote proxy servers to conduct cookie-injection attacks via a crafted response...