CVE-2018-12384: mozilla network_security_services
CVSS: 5.9v3.0MediumModified
AliasesALPINE-CVE-2018-12384MGASA-2018-0393RHSA-2018:2768RHSA-2018:2898UBUNTU-CVE-2018-12384DEBIAN-CVE-2018-12384
Published 29-04-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-12384 is a medium (CVSS 5.9) vulnerability in mozilla network_security_services. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.5% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.0 (NVD)EPSS score
1.48%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 29-04-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 metrics
6 scores · 5 sources · 2 versionsMedium 5.9Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NSources5 sources · 4.8–5.9
- OSV · AlpineEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · Red hatEcosystem advisory · calculated4.8MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.48%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
-0.01 pp
From 1.50% on 18-09-2026
18-09-202618-10-2026
EPSS score1.48%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat6 products
- nss< 0:3.36.0-7.el7_5 | < 0:3.36.0-9.el6_10
- nss-debuginfo< 0:3.36.0-7.el7_5 | < 0:3.36.0-9.el6_10
- nss-devel< 0:3.36.0-7.el7_5 | < 0:3.36.0-9.el6_10
- nss-pkcs11-devel< 0:3.36.0-7.el7_5 | < 0:3.36.0-9.el6_10
- nss-sysinit< 0:3.36.0-7.el7_5 | < 0:3.36.0-9.el6_10
Mageia5 products
- firefox< 60.2.1-1.mga6
- firefox-l10n< 60.2.1-1.mga6
- hunspell1.6< 1.6.2-1.mga6
- nss< 3.36.5-1.1.mga6
- sqlite3< 3.22.0-2.1.mga6
Alpine1 product
- nss< 3.39-r0 | < 3.36.1-r1
Debian1 product
- nss< 2:3.39-1
Mozilla1 product
Nss1 product
- network security services (nss)All versions prior to NSS 3.39
Ubuntu1 product
- nss< 2:3.28.4-0ubuntu0.14.04.4 | < 2:3.28.4-0ubuntu0.16.04.4 | < 2:3.35-2ubuntu2.1
7 vendors · 16 products
