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Critical severity · published Jun 11, 2018
CVE-2017-5456
A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message
9.8
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 53.0; before 52.1.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.3; 7.4 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.3; 7.4; 7.5 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
Affected product
FI
Firefox
Mozilla
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-5456
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-5456
Third Party Advisory
http://www.securityfocus.com/bid/97940
Third Party Advisory
http://www.securitytracker.com/id/1038320
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1106
Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=1344415
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/
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