CVE-2019-9813

Impact:
Critical
Public Date:
2019-03-22
CWE:
CWE-843
Bugzilla:
1692182: CVE-2019-9813 Mozilla: Ionmonkey type confusion with __proto__ mutations

The MITRE CVE dictionary describes this issue as:

Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

Find out more about CVE-2019-9813 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

In general, this flaw be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

CVSS v3 metrics

CVSS3 Base Score 8.8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (thunderbird) RHSA-2019:0680 2019-03-28
Red Hat Enterprise Linux 7 (thunderbird) RHSA-2019:0681 2019-03-28
Red Hat Enterprise Linux 7 (firefox) RHSA-2019:0671 2019-03-27
Red Hat Enterprise Linux 6 (firefox) RHSA-2019:0672 2019-03-27
Red Hat Enterprise Linux 8 (thunderbird) RHSA-2019:1144 2019-05-13
Red Hat Enterprise Linux 8 (firefox) RHSA-2019:0966 2019-05-07

Acknowledgements

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Niklas Baumstark via Trend Micro's Zero Day Initiative as the original reporter.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation