CVE-2017-5402

HIGH

Description

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

References

http://rhn.redhat.com/errata/RHSA-2017-0459.html

http://rhn.redhat.com/errata/RHSA-2017-0461.html

http://rhn.redhat.com/errata/RHSA-2017-0498.html

http://www.securityfocus.com/bid/96664

http://www.securitytracker.com/id/1037966

https://bugzilla.mozilla.org/show_bug.cgi?id=1334876

https://security.gentoo.org/glsa/201705-06

https://security.gentoo.org/glsa/201705-07

https://www.debian.org/security/2017/dsa-3805

https://www.debian.org/security/2017/dsa-3832

https://www.mozilla.org/security/advisories/mfsa2017-05/

https://www.mozilla.org/security/advisories/mfsa2017-06/

https://www.mozilla.org/security/advisories/mfsa2017-07/

https://www.mozilla.org/security/advisories/mfsa2017-09/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-08-07

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 7.5

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

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL