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Fencer Vulns
high 7.5

CVE-2022-30556 json

Information Disclosure in mod_lua with websockets

published 2022-06-08 4 y ago modified 2026-09-08 2 mo ago also BIT-apache-2022-30556 , EUVD-2022-52412

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.4%
EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami apache 2.4.54
  • apache http_server 2.4.54
  • apache2 Debian 14, Debian 13, Debian 12 2.4.54-1

debian advisories DEBIAN-CVE-2022-30556

  • apache2 Ubuntu 18.04 LTS 2.4.29-1ubuntu4.24
  • apache2 Ubuntu 20.04 LTS 2.4.41-4ubuntu3.12
  • apache2 Ubuntu 22.04 LTS 2.4.52-1ubuntu4.1
  • apache2 Ubuntu Pro 14.04 LTS 2.4.7-1ubuntu4.22+esm8
  • apache2 Ubuntu Pro 16.04 LTS 2.4.18-2ubuntu3.17+esm6

ubuntu advisories UBUNTU-CVE-2022-30556

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • httpd RHEL 8 2.4.37-51.module+el8.7.0+16050+02173b8e
  • mod_md RHEL 8 1:2.0.8-8.module+el8.3.0+6814+67d1e611
  • mod_ssl RHEL 8 1:2.4.37-51.module+el8.7.0+16050+02173b8e
  • mod_ldap RHEL 8 2.4.37-51.module+el8.7.0+16050+02173b8e
  • mod_http2 RHEL 8 1.15.7-5.module+el8.6.0+13996+01710940
  • httpd-tools RHEL 8 2.4.37-51.module+el8.7.0+16050+02173b8e
  • mod_session RHEL 8 2.4.37-51.module+el8.7.0+16050+02173b8e
  • httpd-manual RHEL 8 2.4.37-51.module+el8.7.0+16050+02173b8e

red hat advisories RHSA-2022:7647RHSA-2022:8067RHSA-2022:6753

  • apache2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.4.66-150400.6.57.1
  • apache2 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 2.4.51-150200.3.48.1
  • apache2 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 2.4.33-150000.3.69.1
  • apache2 SLE Module for Server Applications 15 SP4, SLE Module for Package Hub 15 SP4, SLE Module for Basesystem 15 SP4 +1 more 2.4.51-150400.6.3.1
  • apache2 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 2.4.51-35.19.1
  • apache2 SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4-LTSS +8 more 2.4.23-29.91.1

suse advisories SUSE-SU-2026:2686-1SUSE-SU-2022:2342-1SUSE-SU-2022:2338-1SUSE-SU-2022:2302-1SUSE-SU-2022:2101-1SUSE-SU-2022:2099-1

  • apache2 openSUSE Tumbleweed 2.4.54-1.1

opensuse advisories openSUSE-SU-2024:12142-1

  • httpd AlmaLinux 9 2.4.53-7.el9
  • mod_lua AlmaLinux 9 2.4.53-7.el9
  • mod_ssl AlmaLinux 9 1:2.4.53-7.el9
  • mod_ldap AlmaLinux 9 2.4.53-7.el9
  • httpd-core AlmaLinux 9 2.4.53-7.el9
  • httpd-tools AlmaLinux 9 2.4.53-7.el9
  • mod_session AlmaLinux 9 2.4.53-7.el9
  • httpd-manual AlmaLinux 9 2.4.53-7.el9

almalinux advisories ALSA-2022:8067ALSA-2022:7647

  • httpd Rocky Linux 9 2.4.53-7.el9
  • httpd Rocky Linux 8 2.4.37-51.module+el8.7.0+1059+126e9251
  • mod_md Rocky Linux 8 1:2.0.8-8.module+el8.5.0+695+1fa8055e
  • mod_md Rocky Linux 8 1:2.0.8-8.module+el8.4.0+553+7a69454b
  • mod_http2 Rocky Linux 8 1.15.7-5.module+el8.6.0+823+f143cee1

rocky linux advisories RLSA-2022:8067RLSA-2022:7647

  • apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 2.4.54-r0

alpine advisories ALPINE-CVE-2022-30556

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • apache Arch Linux 2.4.54-1

arch linux advisories AVG-2763

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-30556 updated cvss 7.5

httpd: mod_lua: Information disclosure with websockets

  • Red Hat JBoss Enterprise Application Platform 6 httpd22 httpd22
    affected: workaround, no fix planned “Disabling mod_lua and restarting httpd will mitigate this flaw.”
  • Red Hat JBoss Web Server 3 httpd24 httpd24
    affected: workaround, no fix available “Disabling mod_lua and restarting httpd will mitigate this flaw.”
  • Red Hat Enterprise Linux AppStream (v. 8) mod_md 2.0.8-8.module+el8.3.0+6814+67d1e611, httpd 2.4.37-51.module+el8.7.0+16050+02173b8e, mod_ssl 2.4.37-51.module+el8.7.0+16050+02173b8e, mod_http2 1.15.7-5.module+el8.6.0+13996+01710940, mod_ldap 2.4.37-51.module+el8.7.0+16050+02173b8e, httpd-tools 2.4.37-51.module+el8.7.0+16050+02173b8e, +4 more
    fixed: vendor fix “Disabling mod_lua and restarting httpd will mitigate this flaw.” RHSA-2022:7647
  • Red Hat Enterprise Linux AppStream (v. 9) httpd 2.4.53-7.el9, mod_lua 2.4.53-7.el9, mod_ssl 2.4.53-7.el9, mod_ldap 2.4.53-7.el9, httpd-core 2.4.53-7.el9, httpd-tools 2.4.53-7.el9, +4 more
    fixed: vendor fix “Disabling mod_lua and restarting httpd will mitigate this flaw.” RHSA-2022:8067
  • Red Hat Software Collections for RHEL Workstation(v. 7) httpd24-httpd 2.4.34-23.el7.5, httpd24-mod_ssl 2.4.34-23.el7.5, httpd24-mod_ldap 2.4.34-23.el7.5, httpd24-httpd-tools 2.4.34-23.el7.5, httpd24-mod_session 2.4.34-23.el7.5, httpd24-httpd-manual 2.4.34-23.el7.5, +1 more Red Hat Software Collections for RHEL(v. 7) httpd24-httpd 2.4.34-23.el7.5, httpd24-mod_ssl 2.4.34-23.el7.5, httpd24-mod_ldap 2.4.34-23.el7.5, httpd24-httpd-tools 2.4.34-23.el7.5, httpd24-mod_session 2.4.34-23.el7.5, httpd24-httpd-manual 2.4.34-23.el7.5, +1 more
    fixed: vendor fix “Disabling mod_lua and restarting httpd will mitigate this flaw.” RHSA-2022:6753
  • Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat JBoss Core Services jbcs-httpd24-httpd jbcs-httpd24-httpd
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-25-133-01 updated cvss 7.5

Hitachi Energy Service Suite

  • Hitachi Energy Service Suite <=9.8.1.3
    affected: fixed in 9.8.1.4
  • Hitachi Energy Service Suite 9.8.1.4
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

5.41% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami apache
<2.4.54
2.4.54

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Improve version ranges to indicate fix.