CVE-2019-11728

MEDIUM

Firefox < 68 - SSRF

Title source: llm

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)

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html

[Issue Tracking, Permissions Required, Vendor Advisory] https://bugzilla.mozilla.org/show_bug.cgi?id=1552993

[Third Party Advisory] https://security.gentoo.org/glsa/201908-12

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2019-21/

Scores

CVSS v3 4.7

EPSS 0.0064

EPSS Percentile 70.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Classification

CWE

CWE-668

Status published

Affected Products (3)

mozilla/firefox < 68.0

opensuse/leap

Timeline

Published Jul 23, 2019

Tracked Since Feb 18, 2026