vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2018-12384

N/A
Published: April 29, 2019 at 02:22 PM UTC
Updated: June 17, 2026 at 01:37 AM UTC
2 products affected across 2 vendorsNetwork Security ServicesNetwork Security Services

Using Network Security Services (NSS) by NSS?

Get instant alerts when new vulnerabilities affect Network Security Services (NSS) - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
N/A
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Network Security Services· Mozilla
95%
v < 3.39
Affected range stops below 3.39, so it looks safe — our inference, not a vendor statement
Network Security Services· Nss
60%
All versions prior to NSS 3.39

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

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

CVSS

4.3MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-335

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card