Vulnerability Details : CVE-2017-5388
A STUN server in conjunction with a large number of "webkitRTCPeerConnection" objects can be used to send large STUN packets in a short period of time due to a lack of rate limiting being applied on e10s systems, allowing for a denial of service attack. This vulnerability affects Firefox < 51.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2017-5388
Probability of exploitation activity in the next 30 days: 0.50%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-5388
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2017-5388
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-5388
-
https://www.mozilla.org/security/advisories/mfsa2017-01/
Security vulnerabilities fixed in Firefox 51 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1281482
1281482 - (CVE-2017-5388) WebRTC can be used to generate a large amount of UDP traffic for DDOS attacks (when using e10s)Issue Tracking;Vendor Advisory
-
http://www.securitytracker.com/id/1037693
Mozilla Firefox Multiple Bugs Let Remote Users Bypass Security Restrictions, Spoof URLs, Obtain Potentially Sensitive Information, and Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/95763
Mozilla Firefox Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
Products affected by CVE-2017-5388
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*