CVE-2023-2789 GNU cflow parser.c parse_variable_declaration denial of service
An attacker can cause a denial of service in GNU cflow by exploiting a flaw in the variable declaration parser, affecting developers using the tool.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-2789?
CVE-2023-2789 is a low-severity denial of service vulnerability in GNU cflow, published on 18 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in GNU cflow 1.7. It has been rated as problematic. This issue affects the function func_body/parse_variable_declaration of the file parser.c. The manipulation leads to denial of service. The exploit has been disclosed to the public and may be used. The identifier VDB-229373 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-404
Which versions are affected by CVE-2023-2789?
It affects 1 product.
Products include Gnu Cflow.
How do I fix CVE-2023-2789?
No fix has been published for CVE-2023-2789 yet. Limit exposure of the affected software until one is available.
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-2023-2789 being exploited?
There is no known exploitation of CVE-2023-2789 in the wild and no public exploit code.
Other vulnerabilities in GNU cflow
Sources
Also known as DEBIAN-CVE-2023-2789, GHSA-h6vj-vg8j-jfqp, UBUNTU-CVE-2023-2789.