CVE-2020-25211 Integer overflow in n/a
Medium 6.0
Published
Updated
Check this codebase for CVE-2020-25211 and fix it if it is affected.
What it is: CVE-2020-25211 is a medium-severity vulnerability in Debian Debian Linux, published on 9 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-25211 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-2020-25211/ (Markdown: https://insights.sbomify.com/CVE-2020-25211/index.md)
Local attackers can overflow a buffer in the Linux kernel's conntrack netlink configuration, causing crashes or incorrect protocol handling.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25211?
CVE-2020-25211 is a medium-severity vulnerability in Debian Debian Linux, published on 9 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.
Weakness: CWE-120
Which versions are affected by CVE-2020-25211?
It affects 3 products.
Linux distribution packages (40)
bpftool Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
bpftool-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-abi-whitelists Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-core Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-core Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-devel Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-modules Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-modules-extra Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-aarch64 Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-ppc64le Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-s390x Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-devel Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-doc Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-modules Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-modules-extra Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-tools Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-tools-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-tools-libs Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump-core Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump-devel Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump-modules Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-zfcpdump-modules-extra Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
perf Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
perf-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
python3-perf Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
python3-perf-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.18.0-240.10.1.el8_3 |
bpftool-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debug-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-aarch64 Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-ppc64le Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
kernel-tools-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:4.18.0-240.10.1.el8_3 |
Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel.
How do I fix CVE-2020-25211?
Apply the vendor's patch.
Is CVE-2020-25211 being exploited?
There is no known exploitation of CVE-2020-25211 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2020-25211, GHSA-q7g7-fmmr-xhp8, RHSA-2021:0003, RHSA-2021:0004, RHSA-2021:0189, UBUNTU-CVE-2020-25211.