CVE-2021-45489 Weak cryptography in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2021-45489 and fix it if it is affected.
What it is: CVE-2021-45489 is a high-severity vulnerability in Netbsd Netbsd, published on 25 Dec 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 CVE-2021-45489 in the wild and no public exploit code.
Affected product: Netbsd Netbsd. 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-2021-45489/ (Markdown: https://insights.sbomify.com/CVE-2021-45489/index.md)
NetBSD uses a weak PRNG for IPv6 Flow Labels, potentially allowing attackers to bypass security controls relying on label unpredictability.
- 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-2021-45489?
CVE-2021-45489 is a high-severity vulnerability in Netbsd Netbsd, published on 25 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In NetBSD through 9.2, the IPv6 Flow Label generation algorithm employs a weak cryptographic PRNG.
Weakness: CWE-338
Which versions are affected by CVE-2021-45489?
It affects 1 product.
Products include Netbsd Netbsd.
How do I fix CVE-2021-45489?
No fix has been published for CVE-2021-45489 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-45489 being exploited?
There is no known exploitation of CVE-2021-45489 in the wild and no public exploit code.
Other vulnerabilities in Netbsd Netbsd
Sources
Also known as GHSA-rgh6-hjmr-j5fv.