CVE catalog
CVE-2016-9243
python-cryptography: CVE-2016-9243
- Severity
- Medium · CVSS 4.8
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 3.46% · Oct 27, 2026
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
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 | python-cryptography | sid | 49.0.0-2 | fixed |
| Debian | python-cryptography | forky | 49.0.0-2 | fixed |
| Debian | python-cryptography | trixie | 43.0.0-3+deb13u1 | fixed |
| Debian | python-cryptography | bookworm | 38.0.4-3+deb12u1 | fixed |
| Debian | python-cryptography | bookworm-security | 38.0.4-3~deb12u1 | fixed |
| Ubuntu | python-cryptography | 16.04 | 1.0.1-1ubuntu1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.0.2-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu2 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu3 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.2-2 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.3-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.3-1ubuntu0.1 | fixed |
| Ubuntu | python-cryptography | 16.04 | 1.0.1-1ubuntu1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.0.2-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu2 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.1.1-1ubuntu3 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.2-2 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.3-1 | vulnerable |
| Ubuntu | python-cryptography | 16.04 | 1.2.3-1ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-cryptography | source | sid | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | python-cryptography | source | forky | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | python-cryptography | source | trixie | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Debian | python-cryptography | source | bookworm | 1.5.3-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | python-cryptography | deb | 16.04 | 1.2.3-1ubuntu0.1 | Not reported | USN-3138-1 | Not reported |
| Ubuntu | python-cryptography | deb | 16.04 | 1.2.3-1ubuntu0.1 | Not reported | UBUNTU-CVE-2016-9243 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-cryptography]Fixed
Source package: [python-cryptography]
Details (4)
38.0.4-3+deb12u1· amd64 · bookwormFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
38.0.4-3+deb12u1· arm64 · bookwormFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
38.0.4-3~deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
38.0.4-3~deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
- [python-cryptography-doc]Fixed
Source package: [python-cryptography]
Details (2)
38.0.4-3+deb12u1· all · bookwormFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
38.0.4-3+deb12u1· all · bookwormFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · bookworm; dsa · python-cryptography · debian · 12
[Debian 13 (Trixie)]
- [python3-cryptography]Fixed
Source package: [python-cryptography]
Details (2)
43.0.0-3+deb13u1· amd64 · trixieFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · 13
43.0.0-3+deb13u1· arm64 · trixieFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · 13
- [python-cryptography-doc]Fixed
Source package: [python-cryptography]
Details (2)
43.0.0-3+deb13u1· all · trixieFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · 13
43.0.0-3+deb13u1· all · trixieFixed · Fixed:
1.5.3-1dsa · python-cryptography · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-9243]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-9243]
- [https://osv.dev/vulnerability/USN-3138-1]
- [https://security-tracker.debian.org/tracker/CVE-2016-9243]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-9243.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]