CVE-2018-12398 — Improper Input Validation in Mozilla Firefox

CWE-20 — Improper Input ValidationCWE-79 — Cross-site ScriptingCWE-284 — Improper Access Control10 documents7 sources
Severity
6.5MEDIUMNVD
OSV8.8
EPSS
0.3%
top 51.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxDebian FirefoxCanonical Ubuntu Linux
Timeline
PublishedFeb 28
Latest updateMay 13

Description

By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/firefox< firefox 63.0-1 (sid)
▶CVEListV5mozilla/firefoxunspecified — 63
▶NVDmozilla/firefox< 63.0
▶Ubuntumozilla/firefox< 63.0+build2-0ubuntu0.14.04.2+5

Also affects: Ubuntu Linux 14.04, 16.04, 18.04, 18.10

🔴Vulnerability Details

4
GHSA
GHSA-mmrj-hw4g-j8hv: By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CS↗2022-05-13
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OSV
firefox regressions↗2018-11-23
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OSV
CVE-2018-12398: By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CS↗2018-10-24
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OSV
firefox vulnerabilities↗2018-10-24
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📋Vendor Advisories

4
Ubuntu
Firefox regressions↗2018-11-23
▶
Ubuntu
Firefox vulnerabilities↗2018-10-24
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Red Hat
firefox: Content Security Policy bypass through stylesheet injection in resource URIs↗2018-10-23
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Debian
CVE-2018-12398: firefox - By using the reflected URL in some special resource URIs, such as chrome:, it is...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-12398 firefox: Content Security Policy bypass through stylesheet injection in resource URIs↗2019-03-28
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