CVE-2019-11712 Information

Description

POST requests made by NPAPI plugins such as Flash that receive a status 308 redirect response can bypass CORS requirements. This can allow an attacker to perform Cross-Site Request Forgery (CSRF) attacks. This vulnerability affects Firefox ESR 60.8 Firefox 68 and Thunderbird 60.8.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html https://bugzilla.mozilla.org/show_bug.cgi?id=1543804 https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html https://security.gentoo.org/glsa/201908-12 https://security.gentoo.org/glsa/201908-20 https://www.mozilla.org/security/advisories/mfsa2019-21/ https://www.mozilla.org/security/advisories/mfsa2019-22/ https://www.mozilla.org/security/advisories/mfsa2019-23/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8