SUSE-SU-2021:0647-1 Security update for csync2
Not scored
Published
Check this codebase for SUSE-SU-2021:0647-1 and fix it if it is affected.
What it is: SUSE-SU-2021:0647-1 is a vulnerability in csync2, published on 26 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of SUSE-SU-2021:0647-1 in the wild and no public exploit code.
Affected product: csync2. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/SUSE-SU-2021-0647-1/ (Markdown: https://insights.sbomify.com/SUSE-SU-2021-0647-1/index.md)
An issue in csync2 caused incorrect TLS key generation during installation, potentially weakening encryption and allowing security bypasses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is SUSE-SU-2021:0647-1?
SUSE-SU-2021:0647-1 is a vulnerability in csync2, published on 26 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This update for csync2 fixes the following issues:
- Fixed an issue where TLS keys were generated wrongly during installation (bsc#1145032)
Which versions are affected by SUSE-SU-2021:0647-1?
Linux distribution packages (3)
csync2 SUSE:Linux Enterprise High Availability Extension 12 SP3 | All versions | 2.0+git.1368794815.cf835a7-3.6.29 |
csync2 SUSE:Linux Enterprise High Availability Extension 12 SP4 | All versions | 2.0+git.1368794815.cf835a7-3.6.29 |
csync2 SUSE:Linux Enterprise High Availability Extension 12 SP5 | All versions | 2.0+git.1368794815.cf835a7-3.6.29 |
How do I fix SUSE-SU-2021:0647-1?
Apply the vendor's patch.
Is SUSE-SU-2021:0647-1 being exploited?
There is no known exploitation of SUSE-SU-2021:0647-1 in the wild and no public exploit code.