CVE-2023-49551 Denial of service in n/a
A remote attacker can cause a denial of service in the Cesanta MJS library via a flaw in the JSON parsing function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-49551?
CVE-2023-49551 is a high-severity denial of service vulnerability in Cesanta Mjs, published on 2 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_op_json_parse function in the msj.c file.
Weakness: CWE-20
Which versions are affected by CVE-2023-49551?
It affects 1 product.
Products include Cesanta Mjs.
How do I fix CVE-2023-49551?
No fix has been published for CVE-2023-49551 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-2023-49551 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49551 exists.
Other vulnerabilities in Cesanta Mjs
Sources
Also known as GHSA-7hrg-3c44-45cg, UBUNTU-CVE-2023-49551.