CVE-2019-11728

MEDIUM

Firefox < 68.0 - TCP Port Scanning via Alt-Svc Header

Title source: llm
STIX 2.1

Description

The HTTP Alternative Services header, Alt-Svc, can be used by a malicious site to scan all TCP ports of any host that the accessible to a user when web content is loaded. This vulnerability affects Firefox < 68.

References (7)

Core 7
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1552993
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201908-12
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html

Scores

CVSS v3 4.7
EPSS 0.0063
EPSS Percentile 70.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Details

CWE
CWE-668
Status published
Products (3)
mozilla/firefox < 68.0
opensuse/leap 15.0
opensuse/leap 15.1
Published Jul 23, 2019
Tracked Since Feb 18, 2026