CVE-2022-30556 Information Disclosure in mod_lua with websockets

What is CVE-2022-30556?

CVE-2022-30556 is a high-severity vulnerability in Apache Http Server, published on 8 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer.

Weakness: CWE-200

Which versions are affected by CVE-2022-30556?

1 open source package ship an affected version, including apache. It affects 3 products.

Products include Apache Http Server, Fedoraproject Fedora, Netapp Clustered Data Ontap.

How do I fix CVE-2022-30556?

Upgrade apache to 2.4.54 or later.

Is CVE-2022-30556 being exploited?

There is no known exploitation of CVE-2022-30556 in the wild and no public exploit code.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

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

Also known as ALPINE-CVE-2022-30556, BIT-apache-2022-30556, CLEANSTART-2026-MY79414, DEBIAN-CVE-2022-30556, GHSA-gvrr-g8v5-hjqr.