CVE-2022-4064 Dalli Meta Protocol request_formatter.rb self.meta_set injection
Attackers can inject code via the meta_set function in the Dalli Ruby memcached client, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-4064?
CVE-2022-4064 is a medium-severity code injection vulnerability in Dalli, published on 19 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.
Which versions are affected by CVE-2022-4064?
2 open source packages ship an affected version, including dalli. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
dalli RubyGems | All versions | 3.2.3 |
dalli RubyGems | All versions | 3.2.3 |
Products include Dalli Project Dalli.
How do I fix CVE-2022-4064?
Upgrade dalli to 3.2.3 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2022-4064 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4064 exists.
Sources
Also known as GHSA-3xg8-cc8f-9wv2, OESA-2023-1002, UBUNTU-CVE-2022-4064.