CVE-1999-1021 NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16
High 7.2
Published
Updated
Check this codebase for CVE-1999-1021 and fix it if it is affected.
What it is: CVE-1999-1021 is a high-severity vulnerability in Sun Sunos, published on 9 Mar 2002.
Exploitation: There is no known exploitation of CVE-1999-1021 in the wild and no public exploit code.
Affected product: Sun Sunos. 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-1999-1021/ (Markdown: https://insights.sbomify.com/CVE-1999-1021/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-1999-1021?
CVE-1999-1021 is a high-severity vulnerability in Sun Sunos, published on 9 Mar 2002.
Official description
NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16 bits are set to 0, as fixed by the NFS jumbo patch upgrade.
Which versions are affected by CVE-1999-1021?
It affects 1 product.
Products include Sun Sunos.
How do I fix CVE-1999-1021?
No fix has been published for CVE-1999-1021 yet. Limit exposure of the affected software until one is available.
Is CVE-1999-1021 being exploited?
There is no known exploitation of CVE-1999-1021 in the wild and no public exploit code.
Other vulnerabilities in Sun Sunos
Sources
Also known as GHSA-5xf6-9pfj-rr6g.