CVE-2017-5378

high-risk
Published 2018-06-11

Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Do I need to act?

~
1.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Debian Redhat Mozilla

References (26)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0190.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0238.html
Third Party Advisory http://www.securityfocus.com/bid/95769
Third Party Advisory http://www.securitytracker.com/id/1037693
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1312001
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1330769
Third Party Advisory https://security.gentoo.org/glsa/201702-13
Third Party Advisory https://security.gentoo.org/glsa/201702-22
Third Party Advisory https://www.debian.org/security/2017/dsa-3771
Third Party Advisory https://www.debian.org/security/2017/dsa-3832
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-01/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-02/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-03/
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0190.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0238.html
Third Party Advisory http://www.securityfocus.com/bid/95769
Third Party Advisory http://www.securitytracker.com/id/1037693
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1312001
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1330769
Third Party Advisory https://security.gentoo.org/glsa/201702-13
and 6 more references
50
/ 100
high-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 20/34 · Moderate