CVE-2018-12384
nss: ServerHello.random is all zeros when handling a v2-compatible ClientHello
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Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · September 3, 2018
Updated · November 22, 2025
Description
A flaw was found in the way NSS responded to an SSLv2-compatible ClientHello with a ServerHello that had an all-zero random. A man-in-the-middle attacker could use this flaw in a passive replay attack.
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 · 4.8CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE not specified