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CVE-2018-12384 Details

Description

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12384	CVE	Issue TrackingVendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	CVE
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12384	[email protected]	Issue TrackingVendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-335	Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)	[email protected]

Affected Products

Product	Versions
mozilla network security services	< 3.39
CPE cpe:2.3:a:mozilla:network_security_services:::::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 24, 2020	CWE Remap	[email protected]
Oct 16, 2019	CVE Modified	[email protected]
May 3, 2019	Initial Analysis	[email protected]