CVE-2023-27786 Null dereference in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2023-27786 and fix it if it is affected.
What it is: CVE-2023-27786 is a high-severity vulnerability in Broadcom Tcpreplay, published on 16 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-27786 exists.
Affected product: Broadcom Tcpreplay. 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-2023-27786/ (Markdown: https://insights.sbomify.com/CVE-2023-27786/index.md)
A remote attacker can cause a denial of service in TCPprep via a null pointer dereference in the macinstring function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-27786?
CVE-2023-27786 is a high-severity vulnerability in Broadcom Tcpreplay, published on 16 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.
Weakness: CWE-476
Which versions are affected by CVE-2023-27786?
It affects 1 product.
Products include Broadcom Tcpreplay.
How do I fix CVE-2023-27786?
Upgrade to a fixed version.
Is CVE-2023-27786 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-27786 exists.
Other vulnerabilities in Broadcom Tcpreplay
Sources
Also known as DEBIAN-CVE-2023-27786, GHSA-qwhm-4rh7-6qr6, UBUNTU-CVE-2023-27786.