CVE-2016-2821

MEDIUM

Description

Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.

References

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html

http://www.debian.org/security/2016/dsa-3600

http://www.mozilla.org/security/announce/2016/mfsa2016-51.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

http://www.securityfocus.com/bid/91075

http://www.securitytracker.com/id/1036057

http://www.ubuntu.com/usn/USN-2993-1

https://access.redhat.com/errata/RHSA-2016:1217

https://bugzilla.mozilla.org/show_bug.cgi?id=1271460

Details

Source: MITRE

Published: 2016-06-13

Updated: 2018-10-30

Risk Information

CVSS v2.0

Base Score: 6.8

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

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 5.9

Exploitability Score: 1.6

Severity: HIGH