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CVE-2017-5456
CRITICAL
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.
Published: Jun 11, 2018
Modified: Jun 17, 2026
CWE-732
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (11)
| Vendor | Product | Version |
|---|---|---|
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux_desktop | 7.0 |
| redhat | enterprise_linux_server | 7.0 |
| redhat | enterprise_linux_server_aus | 7.3 |
| redhat | enterprise_linux_server_aus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.3 |
| redhat | enterprise_linux_server_eus | 7.4 |
| redhat | enterprise_linux_server_eus | 7.5 |
| redhat | enterprise_linux_workstation | 7.0 |
| mozilla | firefox | * < 53.0 |
| mozilla | firefox | * < 52.1.0 |
GitHub Security Advisory GHSA-59p4-f6m8-9792
A mechanism to bypass file system access protections in the sandbox using the file system request...
References (12)
- http://www.securityfocus.com/bid/97940 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1106 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344415 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-12/ Vendor Advisory
- http://www.securityfocus.com/bid/97940 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1106 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344415 Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-12/ Vendor Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
2.78%
Top 15% most likely to be exploited
Threat Score
40 / 100
Data Sources
NVD
EPSS
GitHub