Vulnerability · Published Dec 22, 2024 · Assigned by mitre
CVE-2024-56375
High 7.5
In plain English
A high-severity security flaw in fort-validator from nicmx. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | fort-validator | 1.6.5-1 | DEBIAN-CVE-2024-56375 |
| Debian:14 | fort-validator | 1.6.5-1 | DEBIAN-CVE-2024-56375 |
| Ubuntu:22.04:LTS | fort-validator | no fix listed | UBUNTU-CVE-2024-56375 |
| Ubuntu:24.04:LTS | fort-validator | no fix listed | UBUNTU-CVE-2024-56375 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nicmx | fort-validator | 1.6.3 – before 1.6.5 |
Weakness: CWE-191 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H