CVE-2022-38150 Denial of service in n/a
An attacker can cause a denial of service in Varnish Cache by sending forged HTTP/1 backend responses with crafted reason phrases, triggering an assertion failure and restart.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-38150?
CVE-2022-38150 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 11 Aug 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Varnish Cache 7.0.0, 7.0.1, 7.0.2, and 7.1.0, it is possible to cause the Varnish Server to assert and automatically restart through forged HTTP/1 backend responses. An attack uses a crafted reason phrase of the backend response status line. This is fixed in 7.0.3 and 7.1.1.
Weakness: CWE-400
Which versions are affected by CVE-2022-38150?
1 open source package ship an affected version, including varnish. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
varnish Bitnami | From 7.0.0 | 7.0.1, 7.0.2, 7.0.3, 7.1.1 |
Linux distribution packages (3)
varnish SUSE:Package Hub 15 SP4 | All versions | 7.1.1-bp154.2.6.1 |
varnish openSUSE:Leap 15.4 | All versions | 7.1.1-bp154.2.6.1 |
varnish openSUSE:Tumbleweed | All versions | 7.1.1-1.1 |
Products include Fedoraproject Fedora, Varnish Cache Project Varnish Cache.
How do I fix CVE-2022-38150?
Upgrade varnish to a fixed version for your release line: 7.0.1, 7.0.2, 7.0.3 or 7.1.1.
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-2022-38150 being exploited?
There is no known exploitation of CVE-2022-38150 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2022-38150, BIT-varnish-2022-38150, DEBIAN-CVE-2022-38150, GHSA-jg6x-rh3w-6pp3, OESA-2022-1854, openSUSE-SU-2022:10104-1 and 1 more.