CVE-2022-32206 Denial of service in https://github.com/curl/curl
A malicious server can cause curl to exhaust memory via unbounded decompression chains, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-32206?
CVE-2022-32206 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 7 Jul 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Weakness: CWE-770
Which versions are affected by CVE-2022-32206?
It affects 19 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Haxx Curl, Netapp Bootstrap Os, Netapp Clustered Data Ontap, Netapp Element Software and 13 more.
How do I fix CVE-2022-32206?
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-2022-32206 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-32206 exists.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2022-32206, AZL-10102, CLEANSTART-2026-TI45822, CURL-CVE-2022-32206, DEBIAN-CVE-2022-32206, GHSA-pphv-gw4r-gww8 and 2 more.