PT-2019-4554 · Mozilla+3 · Firefox+3

U543083 · Published 2019-07-11 · Updated 2024-12-12 · CVE-2019-11721

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 68

Description The issue is related to an error in encoding the Latin symbol 'kra', which can be used to substitute the standard 'k' symbol in the address bar. This can lead to domain spoofing attacks, as the symbol does not display as punycode text, potentially causing user confusion.

Recommendations For versions prior to 68, update to version 68 or later to resolve the issue. As a temporary workaround, consider avoiding the use of the kra symbol in the address bar until the update is applied. Restrict access to potentially spoofed domains to minimize the risk of exploitation.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2019-2301

ALT-PU-2019-2324

ALT-PU-2019-2479

ALT-PU-2019-2486

BDU:2020-00600

CVE-2019-11721

MGASA-2019-0213

MGASA-2019-0272

OPENSUSE-SU-2019:2248-1

OPENSUSE-SU-2019:2249-1

OPENSUSE-SU-2019:2251-1

OPENSUSE-SU-2019:2260-1

OPENSUSE-SU-2019_2248-1

OPENSUSE-SU-2019_2249-1

OPENSUSE-SU-2019_2251-1

OPENSUSE-SU-2019_2260-1

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

SUSE-SU-2019:14246-1

SUSE-SU-2019:2515-1

SUSE-SU-2019:2545-1

SUSE-SU-2019:2620-1

SUSE-SU-2019_14246-1

USN-4054-1

USN-4054-2

Affected Products

Alt Linux

Firefox

Suse

Ubuntu

References · 2136

• 🔥 https://bugzilla.mozilla.org/show_bug.cgi?id=1256009 · Exploit
• https://osv.dev/vulnerability/CVE-2019-11721 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4054-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11721 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:14246-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:14572-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11717 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11728 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2260-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11727 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2019-21 · Vendor Advisory
• https://mozilla.org/en-US/firefox/68.0esr/releasenotes · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11711 · Vendor Advisory