CVE-2020-27634 Weak cryptography in n/a
Critical 9.1
Published
Updated
Check this codebase for CVE-2020-27634 and fix it if it is affected.
What it is: CVE-2020-27634 is a critical vulnerability in n/a, published on 10 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-27634 in the wild and no public exploit code.
Affected product: n/a. 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/CVE-2020-27634/ (Markdown: https://insights.sbomify.com/CVE-2020-27634/index.md)
Attackers can predict TCP Initial Sequence Numbers in Contiki OS, potentially enabling session hijacking or connection spoofing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27634?
CVE-2020-27634 is a critical vulnerability in n/a, published on 10 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Contiki 4.5, TCP ISNs are improperly random.
Weakness: CWE-330
Which versions are affected by CVE-2020-27634?
It affects 1 product.
Products include Contiki-Ng Contiki-Ng.
How do I fix CVE-2020-27634?
No fix has been published for CVE-2020-27634 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-27634 being exploited?
There is no known exploitation of CVE-2020-27634 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-pw9j-jvfg-9ppw.