CVE-2017-5456

Impact:
Important
Public Date:
2017-04-19
Bugzilla:
1443297: CVE-2017-5456 Mozilla: Sandbox escape allowing local file system read access (MFSA 2017-12)

The MITRE CVE dictionary describes this issue as:

A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message. This allows for read and write access to the local file system. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.

Find out more about CVE-2017-5456 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 7.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
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 7 (firefox) RHSA-2017:1106 2017-04-21

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 thunderbird Not affected
Red Hat Enterprise Linux 6 firefox Not affected
Red Hat Enterprise Linux 6 thunderbird Not affected
Red Hat Enterprise Linux 5 thunderbird Not affected
Red Hat Enterprise Linux 5 firefox Will not fix

Acknowledgements

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Julian Hector as the original reporter.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation