CVE-2017-7813
HIGHFirefox < 56 - Out-of-bounds Read in JavaScript Parser
Title source: llmDescription
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.
References (4)
Core 4
Core References
Exploit, Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1383951
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1039465
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-21/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/101057
Scores
CVSS v3
8.2
EPSS
0.0162
EPSS Percentile
72.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Details
CWE
CWE-125
CWE-704
Status
published
Products (1)
mozilla/firefox
< 55.0.3
Published
Jun 11, 2018
Tracked Since
Feb 18, 2026