CVE-2018-18508
nss: NULL pointer dereference in several CMS functions resulting in a denial of service
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · January 22, 2019
Updated · June 27, 2026
Description
In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.
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
This issue only affects applications compiled against NSS which use CMS (Cryptographic Message Syntax) API. Other applications are not affected.
CVSS / CWE
CVSS 3.0 · 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference