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MozillaCVE-2018-12395

HistoryFeb 28, 2019 - 6:29 p.m.

CVE-2018-12395

2019-02-2818:29:00

mozilla

web.nvd.nist.gov

111

cve-2018-12395

webextension

domain restrictions

webrequest api

domain fronting

firefox esr

firefox

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.01

Percentile

83.7%

JSON

By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.

Affected configurations

Nvd

Vulners

Node

mozillafirefoxRange<63.0

mozillafirefox_esrRange<60.3

Node

debiandebian_linuxMatch8.0

debiandebian_linuxMatch9.0

Node

canonicalubuntu_linuxMatch14.04lts

canonicalubuntu_linuxMatch16.04lts

canonicalubuntu_linuxMatch18.04lts

canonicalubuntu_linuxMatch18.10

Node

redhatenterprise_linux_desktopMatch6.0

redhatenterprise_linux_desktopMatch7.0

redhatenterprise_linux_serverMatch6.0

redhatenterprise_linux_serverMatch7.0

redhatenterprise_linux_server_eusMatch7.5

redhatenterprise_linux_workstationMatch6.0

redhatenterprise_linux_workstationMatch7.0

VendorProductVersionCPE
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozillafirefox_esr*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
debiandebian_linux8.0cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonicalubuntu_linux14.04cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonicalubuntu_linux16.04cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.10cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
redhatenterprise_linux_desktop6.0cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhatenterprise_linux_desktop7.0cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
mozilla	firefox	*	cpe:2.3:a:mozilla:firefox::::::::
mozilla	firefox_esr	*	cpe:2.3:a:mozilla:firefox_esr::::::::
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
canonical	ubuntu_linux	14.04	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
canonical	ubuntu_linux	16.04	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
canonical	ubuntu_linux	18.04	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
canonical	ubuntu_linux	18.10	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*
redhat	enterprise_linux_desktop	6.0	cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::*
redhat	enterprise_linux_desktop	7.0	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*

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CNA Affected

[
  {
    "product": "Firefox ESR",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "60.3",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "63",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]