CVE-2019-17005

Mozilla: Buffer overflow in plain text serializer

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Severity

Moderate

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · December 3, 2019

Updated · November 22, 2025

Description

The plain text serializer used a fixed-size array for the number of

elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

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 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')