Ubuntu.comUB:CVE-2018-12395CVE-2018-12395
5 Medium
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
7.5 High
CVSS3
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
0.016 Low
EPSS
Percentile
87.3%
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.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 63.0+build2-0ubuntu0.18.04.2 | UNKNOWN |
| ubuntu | 18.10 | noarch | firefox | < 63.0+build2-0ubuntu0.18.10.2 | UNKNOWN |
| ubuntu | 19.04 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 19.10 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 20.10 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 63.0+build1-0ubuntu1 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2018-12395
nvd.nist.gov/vuln/detail/CVE-2018-12395
security-tracker.debian.org/tracker/CVE-2018-12395
ubuntu.com/security/notices/USN-3801-1
www.cve.org/CVERecord?id=CVE-2018-12395
www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12395
www.mozilla.org/en-US/security/advisories/mfsa2018-27/#CVE-2018-12395
Related
5 Medium
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
7.5 High
CVSS3
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
0.016 Low
EPSS
Percentile
87.3%