What’s Vulnerable › Vulnerabilities

CVE-2022-30556: Information Disclosure in mod_lua with websockets

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-09 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• Apache HTTP Server: before 2.4.54 — fixed in 2.4.54
• Fedoraproject Fedora: 35, 36
• Clustered Data ONTAP: all versions

How to fix

Upgrade to a fixed version: Apache HTTP Server 2.4.54. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2022/06/08/7
• https://httpd.apache.org/security/vulnerabilities_24.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/
• https://security.gentoo.org/glsa/202208-20
• https://security.netapp.com/advisory/ntap-20220624-0005/
• http://www.openwall.com/lists/oss-security/2022/06/08/7
• https://httpd.apache.org/security/vulnerabilities_24.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/
• https://security.gentoo.org/glsa/202208-20
• https://security.netapp.com/advisory/ntap-20220624-0005/

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