CVE-2018-5129
Mozilla: Out-of-bounds write with malformed IPC messages (MFSA 2018-07)
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · March 14, 2018
Updated · November 26, 2025
Description
A lack of parameter validation on IPC messages results in a potential out-of-bounds write through malformed IPC messages. This can potentially allow for sandbox escape through memory corruption in the parent process. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.
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 · 8.6CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CWE-787 · Out-of-bounds Write