CVE-2024-21493 Improper Validation of Array Index in github.com/greenpau/caddy-security

What is CVE-2024-21493?

CVE-2024-21493 is a medium-severity vulnerability in github.com/greenpau/caddy-security, published on 17 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

All versions of the package github.com/greenpau/caddy-security are vulnerable to Improper Validation of Array Index when parsing a Caddyfile. Multiple parsing functions in the affected library do not validate whether their input values are nil before attempting to access elements, which can lead to a panic (index out of range). Panics during the parsing of a configuration file may introduce ambiguity and vulnerabilities, hindering the correct interpretation and configuration of the web server.

Weakness: CWE-129

Which versions are affected by CVE-2024-21493?

3 open source packages ship an affected version, including github.com/greenpau/caddy-security. It affects 1 product.

Products include Greenpau Caddy-Security.

How do I fix CVE-2024-21493?

No fix has been published for CVE-2024-21493 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-21493 being exploited?

There is no known exploitation of CVE-2024-21493 in the wild and no public exploit code.

Other vulnerabilities in github.com/greenpau/caddy-security

• CVE-2024-21495 Use of Insufficiently Random Values in github.com/greenpau/caddy-security Medium 6.5
• CVE-2024-21494 Authentication Bypass by Spoofing in github.com/greenpau/caddy-security Medium 5.4
• CVE-2024-21497 Open Redirect in github.com/greenpau/caddy-security Medium 5.4
• CVE-2024-21499 Improper Neutralization of HTTP Headers in github.com/greenpau/caddy-security Medium 4.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8h95-jcp5-pjpr, GO-2024-2564.