CVE catalog
CVE-2016-6303
openssl: CVE-2016-6303
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 31.99% · Oct 25, 2026
Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.
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 | openssl | sid | 3.6.5-1 | fixed |
| Debian | openssl | forky | 3.6.5-1 | fixed |
| Debian | openssl | trixie | 3.5.7-1~deb13u2 | fixed |
| Debian | openssl | trixie-security | 3.5.7-1~deb13u3 | fixed |
| Debian | openssl | bookworm | 3.0.20-1~deb12u2 | fixed |
| Debian | openssl | bookworm-security | 3.0.22-1~deb12u2 | fixed |
| Alpine | openssl | 3.2 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.3 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.4 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.5 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.6 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.7 | 1.0.2h-r3 | fixed |
| Alpine | openssl | 3.8 | 1.0.2h-r3 | fixed |
| Ubuntu | openssl | 14.04 | 1.0.1e-3ubuntu1 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1e-4ubuntu1 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1e-4ubuntu2 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1e-4ubuntu3 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1e-4ubuntu4 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu1 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.1 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.2 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.3 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.4 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.5 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.7 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.8 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.11 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.12 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.15 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.16 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.17 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.18 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.19 | vulnerable |
| Ubuntu | openssl | 14.04 | 1.0.1f-1ubuntu2.20 | fixed |
| Ubuntu | openssl | 16.04 | 1.0.2d-0ubuntu1 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2d-0ubuntu2 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2e-1ubuntu1 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2f-2ubuntu1 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu2 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu3 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu4 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu4.1 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu4.2 | vulnerable |
| Ubuntu | openssl | 16.04 | 1.0.2g-1ubuntu4.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openssl | source | sid | 1.0.2i-1 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | forky | 1.0.2i-1 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | trixie | 1.0.2i-1 | not yet assigned | Not reported | Not reported |
| Debian | openssl | source | bookworm | 1.0.2i-1 | not yet assigned | Not reported | Not reported |
| Alpine | openssl | apk | 3.2 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.3 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.4 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.5 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.6 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.7 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Alpine | openssl | apk | 3.8 | 1.0.2h-r3 | Not reported | ALPINE-CVE-2016-6303 | Not reported |
| Ubuntu | openssl | deb | 14.04 | 1.0.1f-1ubuntu2.20 | Not reported | UBUNTU-CVE-2016-6303 | Not reported |
| Ubuntu | openssl | deb | 16.04 | 1.0.2g-1ubuntu4.4 | Not reported | UBUNTU-CVE-2016-6303 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libssl3]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
- [libssl-dev]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
- [libssl-doc]Unknown
Source package: [openssl]
Details (6)
3.0.20-1~deb12u2· all · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· all · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· all · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· all · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· all · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· all · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
- [openssl]Unknown
Details (6)
3.0.20-1~deb12u2· amd64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookwormFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.20-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· amd64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
3.0.17-1~deb12u2· arm64 · bookworm-updatesFixed · Fixed:
1.0.2i-1dsa · openssl · debian · bookworm; dsa · openssl · debian · 12
[Debian 13 (Trixie)]
- [libssl3t64]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
- [libssl-dev]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
- [libssl-doc]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· all · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· all · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· all · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· all · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· all · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
- [openssl]Unknown
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
- [openssl-provider-fips]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
- [openssl-provider-legacy]Unknown
Source package: [openssl]
Details (6)
3.5.6-1~deb13u2· amd64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· arm64 · trixieFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.6-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u2· arm64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
3.5.7-1~deb13u3· amd64 · trixie-securityFixed · Fixed:
1.0.2i-1dsa · openssl · debian · 13
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-412672.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2016_2387-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2016-6303]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-6303]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-6303]
- [https://security-tracker.debian.org/tracker/CVE-2016-6303]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-6303.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2016/wid-sec-w-2024-0210.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]