Vulnerability CVE-2018-18506
Published: 2019-02-05

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.

Type:

CWE-254

 (Security Features)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux server tus 
Redhat -> Enterprise linux workstation 
Opensuse -> LEAP 
Mozilla -> Firefox 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
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/
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