CVE-2018-5121

MEDIUM

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.

References

http://www.securityfocus.com/bid/102786

http://www.securitytracker.com/id/1040270

https://bugzilla.mozilla.org/show_bug.cgi?id=1402368

https://www.mozilla.org/security/advisories/mfsa2018-02/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-06-25

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 5.3

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

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM