vulnerability / NVI-00016304 / Revision 1
Central Dogma: SSH host-key verification permanently disabled in Git mirror (SshGitMirror)
GitHub lists this reviewed advisory for com.linecorp.centraldogma:centraldogma-server-mirror-git. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
com.linecorp.centraldogma:centraldogma-server-mirror-git
source listed< 0.84.0
# Vulnerability Central Dogma's Git mirror SSH client installs an Apache MINA SSHD `ServerKeyVerifier` lambda that returns `true` unconditionally for every outbound SSH connection used by `git+ssh://` mirrors. The accompanying lines disable the `known_hosts` and `~/.ssh/config` fallbacks, and a repo-wide search confirms that no host-key pinning mechanism (no `acceptedHostKeys`, `knownHosts`, `KnownHostsServerKeyVerifier`, `StaticServerKeyVerifier`, or `RequiredServerKeyVerifier`) exists anywhere in `server-mirror-git/`. Operators have no opt-in way to enable verification. Every outbound mirror connection blindly trusts whatever host key the remote presents. ## Evidence File: `server-mirror-git/src/main/java/com/linecorp/centraldogma/server/internal/mirror/SshGitMirror.java` Lines 143-160 (especially 149) on branch `main` @ commit `d64a5151`: ```java private SshClient createSshClient() { final ClientBuilder builder = ClientBuilder.builder(); // Do not use local file system. builder.hostConfigEntryResolver(HostConfigEntryResolver.EMPTY); // line 146 builder.fileSystemFactory(NoneFileSystemFactory.INSTANCE); // line 147 // Do not verify the server key.
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-vjfw-cpmh-xwv3 ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
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