VulnerabilityModified
CVE-2018-12384
When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead.
MEDIUM 5.9EPSS 1.50%
Does this matter?
Lower severity and a low EPSS score (1.50%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.50% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-335
- Affected
- mozilla/network security services
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12384Issue Tracking, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12384Issue Tracking, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.