*** This bug is a security vulnerability *** Public security bug reported:
KDE Project Security Advisory ============================= Title: kio: Information Leak when accessing https when using a malicious PAC file Risk Rating: Medium CVE: TBC Versions: kio < 5.32, kdelibs < 4.14.30 Date: 28 February 2017 Overview ======== 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. Solution ======== Update to kio >= 5.32 and kdelibs >= 4.14.30 (when released) Or apply the following patches: kio: https://commits.kde.org/kio/f9d0cb47cf94e209f6171ac0e8d774e68156a6e4 kdelibs: https://commits.kde.org/kdelibs/1804c2fde7bf4e432c6cf5bb8cce5701c7010559 Credits ======= Thanks to Safebreach Labs researchers Itzik Kotler, Yonatan Fridburg and Amit Klein. ** Affects: kio (Ubuntu) Importance: Undecided Status: New ** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1668871 Title: kio: Information Leak when accessing https when using a malicious PAC file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kio/+bug/1668871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs