CVE catalog
CVE-2018-10933
libssh: CVE-2018-10933
- Severity
- Critical · CVSS 9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 91.79% · Oct 27, 2026
A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.
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 | libssh | sid | 0.12.2-1 | fixed |
| Debian | libssh | forky | 0.12.2-1 | fixed |
| Debian | libssh | trixie | 0.11.5-0+deb13u1 | fixed |
| Debian | libssh | trixie-security | 0.11.5-0+deb13u1 | fixed |
| Debian | libssh | bookworm | 0.10.6-0+deb12u2 | fixed |
| Debian | libssh | bookworm-security | 0.10.6-0+deb12u3 | fixed |
| Alpine | libssh | 3.10 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.11 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.5 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.6 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.7 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.8 | 0.7.6-r0 | fixed |
| Alpine | libssh | 3.9 | 0.7.6-r0 | fixed |
| Ubuntu | libssh | 14.04 | 0.5.4-1 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu2 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.1 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.3 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.4 | fixed |
| Ubuntu | libssh | 16.04 | 0.6.3-3ubuntu3 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.1 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.2 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.2ubuntu1 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.3 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.3ubuntu0.1 | fixed |
| Ubuntu | libssh | 18.04 | 0.7.5-1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1build1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1ubuntu0.1 | fixed |
| Ubuntu | libssh | 14.04 | 0.5.4-1 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu2 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.1 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.3 | vulnerable |
| Ubuntu | libssh | 14.04 | 0.6.1-0ubuntu3.4 | fixed |
| Ubuntu | libssh | 16.04 | 0.6.3-3ubuntu3 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.1 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.2 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.2ubuntu1 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.3 | vulnerable |
| Ubuntu | libssh | 16.04 | 0.6.3-4.3ubuntu0.1 | fixed |
| Ubuntu | libssh | 18.04 | 0.7.5-1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1build1 | vulnerable |
| Ubuntu | libssh | 18.04 | 0.8.0~20170825.94fa1e38-1ubuntu0.1 | fixed |
| Suse | libssh | linux enterprise desktop 12 sp3 | 0.6.3-12.6.1 | fixed |
| Suse | libssh | linux enterprise software development kit 12 sp3 | 0.6.3-12.6.1 | fixed |
| Suse | libssh | linux enterprise workstation extension 12 sp3 | 0.6.3-12.6.1 | fixed |
| Opensuse | libssh | tumbleweed | 0.9.6-1.2 | fixed |
| Suse | libssh | linux enterprise module for basesystem 15 | 0.7.5-6.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libssh | source | sid | 0.8.4-1 | not yet assigned | Not reported | [911149] |
| Debian | libssh | source | forky | 0.8.4-1 | not yet assigned | Not reported | [911149] |
| Debian | libssh | source | trixie | 0.8.4-1 | not yet assigned | Not reported | [911149] |
| Debian | libssh | source | bookworm | 0.8.4-1 | not yet assigned | Not reported | [911149] |
| Alpine | libssh | apk | 3.10 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.11 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.5 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.6 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.7 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.8 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Alpine | libssh | apk | 3.9 | 0.7.6-r0 | Not reported | ALPINE-CVE-2018-10933 | Not reported |
| Ubuntu | libssh | deb | 14.04 | 0.6.1-0ubuntu3.4 | Not reported | UBUNTU-CVE-2018-10933 | Not reported |
| Ubuntu | libssh | deb | 16.04 | 0.6.3-4.3ubuntu0.1 | Not reported | UBUNTU-CVE-2018-10933 | Not reported |
| Ubuntu | libssh | deb | 18.04 | 0.8.0~20170825.94fa1e38-1ubuntu0.1 | Not reported | UBUNTU-CVE-2018-10933 | Not reported |
| Ubuntu | libssh | deb | 14.04 | 0.6.1-0ubuntu3.4 | Not reported | USN-3795-1 | Not reported |
| Ubuntu | libssh | deb | 16.04 | 0.6.3-4.3ubuntu0.1 | Not reported | USN-3795-1 | Not reported |
| Ubuntu | libssh | deb | 18.04 | 0.8.0~20170825.94fa1e38-1ubuntu0.1 | Not reported | USN-3795-1 | Not reported |
| Suse | libssh | rpm | linux enterprise desktop 12 sp3 | 0.6.3-12.6.1 | Not reported | SUSE-SU-2018:3253-1 | Not reported |
| Suse | libssh | rpm | linux enterprise software development kit 12 sp3 | 0.6.3-12.6.1 | Not reported | SUSE-SU-2018:3253-1 | Not reported |
| Suse | libssh | rpm | linux enterprise workstation extension 12 sp3 | 0.6.3-12.6.1 | Not reported | SUSE-SU-2018:3253-1 | Not reported |
| Opensuse | libssh | rpm | tumbleweed | 0.9.6-1.2 | Not reported | OPENSUSE-SU-2024:10998-1 | Not reported |
| Suse | libssh | rpm | linux enterprise module for basesystem 15 | 0.7.5-6.3.1 | Not reported | SUSE-SU-2018:3162-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libssh-4]Unknown
Source package: [libssh]
Details (4)
0.10.6-0+deb12u2· amd64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u2· arm64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
- [libssh-dev]Unknown
Source package: [libssh]
Details (4)
0.10.6-0+deb12u2· amd64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u2· arm64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
- [libssh-doc]Unknown
Source package: [libssh]
Details (4)
0.10.6-0+deb12u2· all · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u2· all · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· all · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· all · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
- [libssh-gcrypt-4]Unknown
Source package: [libssh]
Details (4)
0.10.6-0+deb12u2· amd64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u2· arm64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
- [libssh-gcrypt-dev]Unknown
Source package: [libssh]
Details (4)
0.10.6-0+deb12u2· amd64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u2· arm64 · bookwormFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
0.10.6-0+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · bookworm; dsa · libssh · debian · 12
[Debian 13 (Trixie)]
- [libssh-4]Unknown
Source package: [libssh]
Details (4)
0.11.2-1+deb13u1· amd64 · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.2-1+deb13u1· arm64 · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
- [libssh-dev]Unknown
Source package: [libssh]
Details (4)
0.11.2-1+deb13u1· amd64 · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.2-1+deb13u1· arm64 · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
- [libssh-doc]Unknown
Source package: [libssh]
Details (4)
0.11.2-1+deb13u1· all · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.2-1+deb13u1· all · trixieFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· all · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
0.11.5-0+deb13u1· all · trixie-securityFixed · Fixed:
0.8.4-1dsa · libssh · debian · 13
[openSUSE Tumbleweed]
- [libssh4]Unknown
Source package: [libssh]
Details (1)
0.11.5-2.1· x86_64 · tumbleweedUnknown · Fixed:
0.9.6-1.2Version impact unknown
dsa · libssh · opensuse · tumbleweed
- [libssh4-32bit]Unknown
Source package: [libssh]
Details (1)
0.11.5-2.1· x86_64 · tumbleweedUnknown · Fixed:
0.9.6-1.2Version impact unknown
dsa · libssh · opensuse · tumbleweed
- [libssh-config]Unknown
Source package: [libssh]
Details (1)
0.11.5-2.1· noarch · tumbleweedUnknown · Fixed:
0.9.6-1.2Version impact unknown
dsa · libssh · opensuse · tumbleweed
- [libssh-devel]Unknown
Source package: [libssh]
Details (1)
0.11.5-2.1· x86_64 · tumbleweedUnknown · Fixed:
0.9.6-1.2Version impact unknown
dsa · libssh · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2018_3162-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2018-10933]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2018-10933]
- [https://osv.dev/vulnerability/DLA-1548-1]
- [https://osv.dev/vulnerability/DSA-4322-1]
- [https://osv.dev/vulnerability/SUSE-SU-2018:3162-1]
- [https://osv.dev/vulnerability/SUSE-SU-2018:3253-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2018-10933]
- [https://osv.dev/vulnerability/USN-3795-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:10998-1]
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2020/icsa-20-294-02.json]
- [https://security-tracker.debian.org/tracker/CVE-2018-10933]
- [https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-10933.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2019/wid-sec-w-2022-1696.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]