CVE-2024-56375 Integer overflow in fort-validator
A malicious RPKI repository can cause a crash in Fort validator via an integer underflow leading to an infinite loop and out-of-bounds access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-56375?
CVE-2024-56375 is a high-severity vulnerability in nicmx fort-validator, published on 22 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An integer underflow was discovered in Fort 1.6.3 and 1.6.4 before 1.6.5. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a Manifest RPKI object containing an empty fileList. Fort dereferences (and, shortly afterwards, writes to) this array during a shuffle attempt, before the validation that would normally reject it when empty. This out-of-bounds access is caused by an integer underflow that causes the surrounding loop to iterate infinitely. Because the product is permanently stuck attempting to overshuffle an array that doesn't actually exist, a crash is nearly guaranteed.
Weakness: CWE-191
Which versions are affected by CVE-2024-56375?
It affects 1 product.
Products include Nicmx Fort Validator.
How do I fix CVE-2024-56375?
Upgrade to a fixed version.
Is CVE-2024-56375 being exploited?
There is no known exploitation of CVE-2024-56375 in the wild and no public exploit code.
Other vulnerabilities in nicmx fort-validator
Sources
Also known as DEBIAN-CVE-2024-56375, GHSA-533g-7w58-g89m.