CVE-2016-8635: mozilla network_security_services
CVSS: 5.9v3.0MediumModified
AliasesUBUNTU-CVE-2016-8635DEBIAN-CVE-2016-8635
Published 01-08-2018Last modified 06-08-2024
Vulnerability summary
CVE-2016-8635 is a medium (CVSS 5.9) vulnerability in mozilla network_security_services. EPSS estimates a 1.99% chance of exploitation in the next 30 days, higher than 80.3% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.0 (NVD)EPSS score
1.99%
0%100%
Low · -0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 01-08-2018PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.
CVSS metrics
5 scores · 4 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:NSources4 sources · 5.3–5.9
- CVE.orgCNA5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
- 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
1.99%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
-0.03 pp
From 2.02% on 18-09-2026
18-09-202618-10-2026
EPSS score1.99%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-358Improperly Implemented Security Check for StandardThe product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.
- CWE-320Key Management ErrorsWeaknesses in this category are related to errors in the management of cryptographic keys.
Affected systems
Redhat6 products
- enterprise_linux_desktop5.0 | 6.0 | 7.0
- enterprise_linux_server5.0 | 6.0 | 7.0
- enterprise_linux_server_aus7.3 | 7.4 | 7.6
- enterprise_linux_server_eus7.3 | 7.4 | 7.5 | 7.6
- enterprise_linux_server_tus7.3 | 7.6
Mozilla2 products
- network_security_services≥ 3.21, ≤ 3.21.4
- nss≥ 3.21.0, < 3.22.0
Debian1 product
- nss< 2:3.25-1
Ubuntu1 product
- nss< 2:3.26.2-0ubuntu0.14.04.3 | < 2:3.26.2-0ubuntu0.16.04.2
4 vendors · 10 products
References
8 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8635X Refsource CONFIRMIssue TrackingThird Party Advisory
