CVE-2017-5400
Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)
Severity
CriticalRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · March 7, 2017
Updated · November 26, 2025
Description
JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 · 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE not specified