CVE-2023-33546 janino vulnerable to denial of service due to stack overflow
An attacker can cause a denial of service via stack overflow in Janino's expression evaluator if it processes untrusted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-33546?
CVE-2023-33546 is a medium-severity denial of service vulnerability in n/a, published on 1 Jun 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Janino 3.1.9 and earlier are subject to denial of service (DOS) attacks when using the expression evaluator.guess parameter name method. If the parser runs on user-supplied input, an attacker could supply content that causes the parser to crash due to a stack overflow. NOTE: this is disputed by multiple parties because Janino is not intended for use with untrusted input.
Weakness: CWE-787
Which versions are affected by CVE-2023-33546?
2 open source packages ship an affected version, including org.codehaus.janino:janino-parent. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.codehaus.janino:janino-parent Maven | All versions to 3.1.9 | None |
org.codehaus.janino:janino-parent Maven | All versions to 3.1.9 | None |
Linux distribution packages (2)
janino openSUSE:Leap 15.4 | All versions | 3.1.10-150200.3.7.1 |
janino openSUSE:Leap 15.5 | All versions | 3.1.10-150200.3.7.1 |
Products include Janino Project Janino.
How do I fix CVE-2023-33546?
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-2023-33546 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33546 exists.
Sources
Also known as DEBIAN-CVE-2023-33546, GHSA-gcg6-xv4f-f749, SUSE-SU-2023:3385-1, openSUSE-SU-2024:13129-1.