CVE catalog
CVE-2016-8635
nss: CVE-2016-8635
- Severity
- Medium · CVSS 5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.99% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | nss | sid | 2:3.132-1 | fixed |
| Debian | nss | forky | 2:3.131.1-1 | fixed |
| Debian | nss | trixie | 2:3.110-1+deb13u4 | fixed |
| Debian | nss | trixie-security | 2:3.110-1+deb13u4 | fixed |
| Debian | nss | bookworm | 2:3.87.1-1+deb12u2 | fixed |
| Debian | nss | bookworm-security | 2:3.87.1-1+deb12u4 | fixed |
| Ubuntu | nss | 14.04 | 2:3.15.1-1ubuntu1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.2-1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.3-1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.3.1-1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.3.1-1.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.3.1-1.1ubuntu1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu3 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu4 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu5 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu6 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu7 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.15.4-1ubuntu7.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.17-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.17.1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.17.1-0ubuntu0.14.04.2 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.17.4-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.19.2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.19.2.1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.19.2.1-0ubuntu0.14.04.2 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.21-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.21-0ubuntu0.14.04.2 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.23-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | nss | 14.04 | 2:3.26.2-0ubuntu0.14.04.3 | fixed |
| Ubuntu | nss | 16.04 | 2:3.19.2-1ubuntu1 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.19.2.1-0ubuntu1 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.21-1ubuntu2 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.21-1ubuntu3 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.21-1ubuntu4 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.23-0ubuntu0.16.04.1 | vulnerable |
| Ubuntu | nss | 16.04 | 2:3.26.2-0ubuntu0.16.04.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | nss | source | sid | 2:3.25-1 | not yet assigned | Not reported | Not reported |
| Debian | nss | source | forky | 2:3.25-1 | not yet assigned | Not reported | Not reported |
| Debian | nss | source | trixie | 2:3.25-1 | not yet assigned | Not reported | Not reported |
| Debian | nss | source | bookworm | 2:3.25-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | nss | deb | 14.04 | 2:3.26.2-0ubuntu0.14.04.3 | Not reported | UBUNTU-CVE-2016-8635 | Not reported |
| Ubuntu | nss | deb | 16.04 | 2:3.26.2-0ubuntu0.16.04.2 | Not reported | UBUNTU-CVE-2016-8635 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libnss3]Unknown
Source package: [nss]
Details (4)
2:3.87.1-1+deb12u2· amd64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u2· arm64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· amd64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· arm64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
- [libnss3-dev]Unknown
Source package: [nss]
Details (4)
2:3.87.1-1+deb12u2· amd64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u2· arm64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· amd64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· arm64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
- [libnss3-tools]Unknown
Source package: [nss]
Details (4)
2:3.87.1-1+deb12u2· amd64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u2· arm64 · bookwormFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· amd64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
2:3.87.1-1+deb12u4· arm64 · bookworm-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · bookworm; dsa · nss · debian · 12
[Debian 13 (Trixie)]
- [libnss3]Unknown
Source package: [nss]
Details (4)
2:3.110-1+deb13u3· amd64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u3· arm64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· amd64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· arm64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
- [libnss3-dev]Unknown
Source package: [nss]
Details (4)
2:3.110-1+deb13u3· amd64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u3· arm64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· amd64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· arm64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
- [libnss3-tools]Unknown
Source package: [nss]
Details (4)
2:3.110-1+deb13u3· amd64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u3· arm64 · trixieFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· amd64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
2:3.110-1+deb13u4· arm64 · trixie-securityFixed · Fixed:
2:3.25-1dsa · nss · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2016_2779.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-8635]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-8635]
- [https://security-tracker.debian.org/tracker/CVE-2016-8635]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-8635.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]