CVE-2018-12395
N/A
Published: February 28, 2019 at 06:00 PM UTC
Updated: June 17, 2026 at 01:37 AM UTC
8 products affected across 4 vendorsDebian LinuxUbuntu LinuxFirefox
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Severity
N/A
Exploit prediction
EPSS 3%
Description
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%v < 63v < 63.0
Affected range stops below 63, so it looks safe — our inference, not a vendor statement
Affected range stops below 63.0, so it looks safe — our inference, not a vendor statement
v < 60.3
Affected range stops below 60.3, so it looks safe — our inference, not a vendor statement
95%
Enterprise Linux Server· Red Hatrubygems
95%95%
95%
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (11)
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105718VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1041944Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3005Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3006x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1467523Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.htmlVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/201811-04Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3801-1/Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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