CVE-2018-5121 — Improper Input Validation in Mozilla Firefox

CWE-20 — Improper Input Validation3 documents3 sources
Severity
5.3MEDIUMNVD
EPSS
1.0%
top 23.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedJun 11
Latest updateMay 14

Description

Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar. When used as part of an Internationalized Domain Name (IDN) this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 58.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶CVEListV5mozilla/firefoxunspecified — 58
▶NVDmozilla/firefox57.0.4

🔴Vulnerability Details

1
GHSA
GHSA-jcrc-r34f-5gqm: Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar↗2022-05-14
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📋Vendor Advisories

1
Debian
CVE-2018-5121: firefox - Low descenders on some Tibetan characters in several fonts on OS X are clipped w...↗2018
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