CVE-2018-18506 Information

Description

When proxy auto-detection is enabled if a web server serves a Proxy Auto-Configuration (PAC) file or if a PAC file is loaded locally this PAC file can specify that requests to the localhost are to be sent through the proxy to another server. This behavior is disallowed by default when a proxy is manually configured but when enabled could allow for attacks on services and tools that bind to the localhost for networked behavior if they are accessed through browsing. This vulnerability affects Firefox 65.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00043.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00023.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html http://www.securityfocus.com/bid/106773 https://access.redhat.com/errata/RHSA-2019:0622 https://access.redhat.com/errata/RHSA-2019:0623 https://access.redhat.com/errata/RHSA-2019:0680 https://access.redhat.com/errata/RHSA-2019:0681 https://access.redhat.com/errata/RHSA-2019:0966 https://access.redhat.com/errata/RHSA-2019:1144 https://lists.debian.org/debian-lts-announce/2019/03/msg00024.html https://lists.debian.org/debian-lts-announce/2019/04/msg00000.html https://seclists.org/bugtraq/2019/Apr/0 https://seclists.org/bugtraq/2019/Mar/28 https://security.gentoo.org/glsa/201904-07 https://usn.ubuntu.com/3874-1/ https://usn.ubuntu.com/3927-1/ https://www.debian.org/security/2019/dsa-4411 https://www.debian.org/security/2019/dsa-4420 https://www.mozilla.org/security/advisories/mfsa2019-01/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9