Vulnerability Details : CVE-2017-7813
Potential exploit
Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.
Products affected by CVE-2017-7813
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7813
0.84%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7813
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:P |
10.0
|
4.9
|
NIST | |
|
8.2
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
3.9
|
4.2
|
NIST |
CWE ids for CVE-2017-7813
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
The product does not correctly convert an object, resource, or structure from one type to a different type.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7813
-
http://www.securityfocus.com/bid/101057
Mozilla Firefox Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
http://www.securitytracker.com/id/1039465
Mozilla Firefox Multiple Bugs Let Remote Users Spoof URLs, Conduct Cross-Site Scripting Attacks, Obtain Potentially Sensitive Information, and Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
-
https://www.mozilla.org/security/advisories/mfsa2017-21/
Security vulnerabilities fixed in Firefox 56 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1383951
1383951 - (CVE-2017-7813) Out-of-bounds access in js::frontend::TokenStream::TokenBuf::getRawCharExploit;Issue Tracking
Jump to