CVE-2017-16820 Use after free in n/a
Critical 9.8
Published
Updated
Check this codebase for CVE-2017-16820 and fix it if it is affected.
What it is: CVE-2017-16820 is a critical use after free vulnerability in n/a, published on 14 Nov 2017. 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-2017-16820 in the wild and no public exploit code.
Affected product: n/a. 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-2017-16820/ (Markdown: https://insights.sbomify.com/CVE-2017-16820/index.md)
A double free vulnerability in the collectd SNMP plugin allows attackers to cause a denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16820?
CVE-2017-16820 is a critical use after free vulnerability in n/a, published on 14 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The csnmp_read_table function in snmp.c in the SNMP plugin in collectd before 5.6.3 is susceptible to a double free in a certain error case, which could lead to a crash (or potentially have other impact).
Weakness: CWE-415
Which versions are affected by CVE-2017-16820?
It affects 1 product.
Linux distribution packages (40)
collectd Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-apache Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-ascent Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-bind Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-ceph Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-chrony Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-curl Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-curl_json Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-curl_xml Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-dbi Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-debuginfo Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-disk Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-dns Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-drbd Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-email Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-generic-jmx Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-hugepages Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-ipmi Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-iptables Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-ipvs Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-java Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-log_logstash Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-lvm Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-mysql Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-netlink Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-nginx Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-notify_email Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-openldap Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-ping Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-postgresql Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-rrdcached Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-rrdtool Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-sensors Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-smart Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-snmp Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-turbostat Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-utils Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-virt Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-write_http Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
collectd-write_riemann Red Hat:enterprise_linux:7::hypervisor | All versions | 0:5.8.0-3.el7 |
Products include Collectd Collectd.
How do I fix CVE-2017-16820?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-16820 being exploited?
There is no known exploitation of CVE-2017-16820 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2017-16820, DEBIAN-CVE-2017-16820, GHSA-fh5v-r835-mw7v, RHSA-2018:0252, RHSA-2018:0299, RHSA-2018:0560 and 2 more.