CVE-2018-18506
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.19% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 82.1% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-02-05 21:00Z7 YR AGO
- Last updated
- 2024-08-05 11:08Z2 YR AGO
- Reserved
- 2018-10-19
- Assigning CNA
- mozilla
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- d5e1a3fc109b461bd81908be23e835fb1ba25accf37c1dac36597684b40d7daa
05 Affected products
06 References
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2019-01/
- www.securityfocus.com106773http://www.securityfocus.com/bid/106773
- usn.ubuntu.comUSN-3874-1https://usn.ubuntu.com/3874-1/
- access.redhat.comRHSA-2019:0623https://access.redhat.com/errata/RHSA-2019:0623
- access.redhat.comRHSA-2019:0622https://access.redhat.com/errata/RHSA-2019:0622
- seclists.org20190320 [SECURITY] [DSA 4411-1] firefox-esr security updatehttps://seclists.org/bugtraq/2019/Mar/28
- www.debian.orgDSA-4411https://www.debian.org/security/2019/dsa-4411
- lists.debian.org[debian-lts-announce] 20190321 [SECURITY] [DLA 1722-1] firefox-esr security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00024.html
- lists.opensuse.orgopenSUSE-SU-2019:1056http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00035.html
- access.redhat.comRHSA-2019:0680https://access.redhat.com/errata/RHSA-2019:0680
- access.redhat.comRHSA-2019:0681https://access.redhat.com/errata/RHSA-2019:0681
- usn.ubuntu.comUSN-3927-1https://usn.ubuntu.com/3927-1/
- lists.opensuse.orgopenSUSE-SU-2019:1077http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00043.html
- www.debian.orgDSA-4420https://www.debian.org/security/2019/dsa-4420
- seclists.org20190401 [SECURITY] [DSA 4420-1] thunderbird security updatehttps://seclists.org/bugtraq/2019/Apr/0
- lists.debian.org[debian-lts-announce] 20190401 [SECURITY] [DLA 1743-1] thunderbird security updatehttps://lists.debian.org/debian-lts-announce/2019/04/msg00000.html
- security.gentoo.orgGLSA-201904-07https://security.gentoo.org/glsa/201904-07
- lists.opensuse.orgopenSUSE-SU-2019:1126http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00023.html
- lists.opensuse.orgopenSUSE-SU-2019:1162http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html
- access.redhat.comRHSA-2019:0966https://access.redhat.com/errata/RHSA-2019:0966
- access.redhat.comRHSA-2019:1144https://access.redhat.com/errata/RHSA-2019:1144
07 Fixed in
Arch Linux
- firefox Fixed in 65.0-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- firefox-esr Fixed in 60.6.0esr-1
- thunderbird Fixed in 1:60.6.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- firefox-esr Fixed in 60.6.0esr-1
- thunderbird Fixed in 1:60.6.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- firefox-esr Fixed in 60.6.0esr-1
- thunderbird Fixed in 1:60.6.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- firefox Fixed in 65.0+build2-0ubuntu0.14.04.1
- thunderbird Fixed in 1:60.6.1+build2-0ubuntu0.14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- firefox Fixed in 65.0+build2-0ubuntu0.16.04.1
- thunderbird Fixed in 1:60.6.1+build2-0ubuntu0.16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- firefox Fixed in 65.0+build2-0ubuntu0.18.04.1
- mozjs38 No fix yet
- mozjs52 No fix yet
- thunderbird Fixed in 1:60.6.1+build2-0ubuntu0.18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- mozjs52 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.