CVE-2021-26529 Memory corruption in n/a
Remote attackers can trigger out-of-bounds writes in Cesanta Mongoose via crafted requests, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-26529?
CVE-2021-26529 is a critical memory corruption vulnerability in Cesanta Mongoose, published on 8 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 and 6.7-6.18 (compiled with mbedTLS support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.
Weakness: CWE-787
Which versions are affected by CVE-2021-26529?
It affects 1 product.
Products include Cesanta Mongoose.
How do I fix CVE-2021-26529?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-26529 being exploited?
There is no known exploitation of CVE-2021-26529 in the wild and no public exploit code.
Other vulnerabilities in Cesanta Mongoose
Sources
Also known as DEBIAN-CVE-2021-26529, GHSA-h9wv-3h63-q247.