CVE-2021-46828 Denial of service in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2021-46828 and fix it if it is affected.
What it is: CVE-2021-46828 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 20 Jul 2022. 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-2021-46828 in the wild and no public exploit code.
Affected product: Debian Debian Linux. 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-2021-46828/ (Markdown: https://insights.sbomify.com/CVE-2021-46828/index.md)
Remote attackers can exhaust file descriptors in processes using libtirpc, causing an infinite loop and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46828?
CVE-2021-46828 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 20 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
Which versions are affected by CVE-2021-46828?
It affects 2 products.
Linux distribution packages (40)
libtirpc AlmaLinux:9 | All versions | 1.3.3-0.el9 |
libtirpc-devel AlmaLinux:9 | All versions | 1.3.3-0.el9 |
libtirpc Red Hat:enterprise_linux:8::baseos | All versions | 0:1.1.4-6.el8 |
libtirpc-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.1.4-6.el8 |
libtirpc-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1.1.4-6.el8 |
libtirpc-devel Red Hat:enterprise_linux:8::baseos | All versions | 0:1.1.4-6.el8 |
libtirpc Red Hat:enterprise_linux:9::baseos | All versions | 0:1.3.3-0.el9 |
libtirpc-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:1.3.3-0.el9 |
libtirpc-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 0:1.3.3-0.el9 |
libtirpc-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:1.3.3-0.el9 |
libtirpc-debugsource Red Hat:enterprise_linux:9::crb | All versions | 0:1.3.3-0.el9 |
libtirpc-devel Red Hat:enterprise_linux:9::crb | All versions | 0:1.3.3-0.el9 |
libtirpc Rocky Linux:9 | All versions | 0:1.3.3-0.el9 |
libtirpc SUSE:Enterprise Storage 6 | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Enterprise Storage 7 | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Micro 5.1 | All versions | 1.2.6-150300.3.14.1 |
libtirpc SUSE:Linux Enterprise Micro 5.2 | All versions | 1.2.6-150300.3.14.1 |
libtirpc SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 1.2.6-150300.3.14.1 |
libtirpc SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.2.6-150300.3.14.1 |
libtirpc SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server 15 SP2-BCL | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server 15-LTSS | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.0.1-17.24.1 |
libtirpc SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 1.0.2-150000.3.18.1 |
libtirpc SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 1.0.1-17.24.1 |
Products include Debian Debian Linux, Libtirpc Project Libtirpc.
How do I fix CVE-2021-46828?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-46828 being exploited?
There is no known exploitation of CVE-2021-46828 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2021-46828, ALSA-2022:8400, DEBIAN-CVE-2021-46828, DLA-3071-1, DSA-5200-1, GHSA-x62c-6mxr-74fh and 12 more.