Critical severity · published Jun 11, 2018
CVE-2017-5397
The cache directory on the local file system is set to be world writable
9.8
CVSS
3.6%
EPSS
No
On KEV
Description
The cache directory on the local file system is set to be world writable. Firefox defaults to extracting libraries from this cache. This allows for the possibility of an installed malicious application or tools with write access to the file system to replace files used by Firefox with their own versions. This vulnerability affects Firefox < 51.0.3.
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)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 51.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-5397
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-5397
Third Party Advisory
http://www.securityfocus.com/bid/96144
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1337304
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-04/
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