Advisories » MGASA-2017-0079

Updated kdelibs4 packages fix security vulnerability

Publication date: 23 Mar 2017
Type: security
Affected Mageia releases : 5
CVE: CVE-2017-6410


Using a malicious PAC file, and then using exfiltration methods in the PAC
function FindProxyForURL() enables the attacker to expose full https URLs.

This is a security issue since https URLs may contain sensitive
information in the URL authentication part (user:password@host), and in
the path and the query (e.g. access tokens).

This attack can be carried out remotely (over the LAN) since proxy
settings allow “Detect Proxy Configuration Automatically”.
This setting uses WPAD to retrieve the PAC file, and an attacker who has
access to the victim’s LAN can interfere with the WPAD protocols
(DHCP/DNS+HTTP) and inject his/her own malicious PAC instead of the
legitimate one