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Vulnerability details: VCID-g7aa-b81j-47dc
Vulnerability ID VCID-g7aa-b81j-47dc
Aliases CVE-2018-18505
Summary An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
cvssv3 10.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18505.json
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.03066 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
epss 0.04261 https://api.first.org/data/v1/epss?cve=CVE-2018-18505
cvssv3 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-18505
cvssv3 10.0 https://nvd.nist.gov/vuln/detail/CVE-2018-18505
archlinux Critical https://security.archlinux.org/AVG-862
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-01
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-02
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-03
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
https://access.redhat.com/errata/RHSA-2019:0218
https://access.redhat.com/errata/RHSA-2019:0219
https://access.redhat.com/errata/RHSA-2019:0269
https://access.redhat.com/errata/RHSA-2019:0270
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18505.json
https://api.first.org/data/v1/epss?cve=CVE-2018-18505
https://bugzilla.mozilla.org/show_bug.cgi?id=1087565
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18356
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18500
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18501
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18505
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18509
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18512
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18513
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5785
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
https://security.gentoo.org/glsa/201903-04
https://security.gentoo.org/glsa/201904-07
https://www.debian.org/security/2019/dsa-4376
https://www.debian.org/security/2019/dsa-4392
https://www.mozilla.org/security/advisories/mfsa2019-01/
https://www.mozilla.org/security/advisories/mfsa2019-02/
https://www.mozilla.org/security/advisories/mfsa2019-03/
http://www.securityfocus.com/bid/106781
1670633 https://bugzilla.redhat.com/show_bug.cgi?id=1670633
ASA-201902-2 https://security.archlinux.org/ASA-201902-2
AVG-862 https://security.archlinux.org/AVG-862
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2018-18505 https://nvd.nist.gov/vuln/detail/CVE-2018-18505
mfsa2019-01 https://www.mozilla.org/en-US/security/advisories/mfsa2019-01
mfsa2019-02 https://www.mozilla.org/en-US/security/advisories/mfsa2019-02
mfsa2019-03 https://www.mozilla.org/en-US/security/advisories/mfsa2019-03
USN-3874-1 https://usn.ubuntu.com/3874-1/
USN-3897-1 https://usn.ubuntu.com/3897-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18505.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-18505
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-18505
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.86219
EPSS Score 0.03066
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:59.140450+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-01.yml 37.0.0