CVE-2017-5456
9.8
CRITICAL · CVSS 3.0 · EPSS 2.8% (pctl 86)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.78% — more likely to be exploited than 86% of all CVEs |
| Weakness | CWE-732 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-06-11 |
| Last modified | 2026-06-17 |
Affected (7)
| Vendor | Product |
|---|---|
| mozilla | firefox |
| redhat | enterprise linux |
| redhat | enterprise linux desktop |
| redhat | enterprise linux server |
| redhat | enterprise linux server aus |
| redhat | enterprise linux server eus |
| redhat | enterprise linux workstation |
References
- http://www.securityfocus.com/bid/97940
- http://www.securitytracker.com/id/1038320
- https://access.redhat.com/errata/RHSA-2017:1106
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344415
- https://www.mozilla.org/security/advisories/mfsa2017-10/
- https://www.mozilla.org/security/advisories/mfsa2017-12/
- http://www.securityfocus.com/bid/97940
- http://www.securitytracker.com/id/1038320
- https://access.redhat.com/errata/RHSA-2017:1106
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344415
- https://www.mozilla.org/security/advisories/mfsa2017-10/
- https://www.mozilla.org/security/advisories/mfsa2017-12/
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