Skip to content
Fencer Vulns
critical 9.1

CVE-2022-22721 in the critical feed json

core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody

published 2022-03-14 4 y ago modified 2026-09-08 2 mo ago also BIT-apache-2022-22721 , EUVD-2022-27864

cvss
9.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
41.9%
EPSS 41.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.

Patch / fix

  • bitnami apache 2.4.53
  • apache http_server 2.4.53
  • apache2 Debian 14, Debian 13, Debian 12 2.4.53-1

debian advisories DEBIAN-CVE-2022-22721

  • apache2 Ubuntu 18.04 LTS 2.4.29-1ubuntu4.22
  • apache2 Ubuntu 20.04 LTS 2.4.41-4ubuntu3.10
  • apache2 Ubuntu 22.04 LTS 2.4.52-1ubuntu2
  • apache2 Ubuntu Pro 14.04 LTS 2.4.7-1ubuntu4.22+esm4
  • apache2 Ubuntu Pro 16.04 LTS 2.4.18-2ubuntu3.17+esm5

ubuntu advisories UBUNTU-CVE-2022-22721

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

  • jbcs-httpd24-curl jboss core services 1 7.86.0-2.el7jbcs
  • jbcs-httpd24-curl jboss core services 1 7.86.0-2.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el8jbcs
  • jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el7jbcs
  • jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el8jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el7jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el8jbcs

red hat advisories RHSA-2022:8840RHSA-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 2.4.51-150200.3.42.1
  • apache2 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 2.4.33-150000.3.66.1
  • apache2 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 2.4.51-35.13.1
  • apache2 SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4-LTSS +8 more 2.4.23-29.88.1
  • apache2 SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.2.34-70.41.1

suse advisories SUSE-SU-2026:2686-1SUSE-SU-2022:1031-1SUSE-SU-2022:0929-1SUSE-SU-2022:0928-1SUSE-SU-2022:0918-1SUSE-SU-2022:14924-1

  • apache2 openSUSE Tumbleweed 2.4.53-1.1
  • apache2 openSUSE Leap 15.3 2.4.51-150200.3.42.1

opensuse advisories openSUSE-SU-2024:11919-1openSUSE-SU-2022:1031-1

  • 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 +10 more 2.4.53-r0

alpine advisories ALPINE-CVE-2022-22721

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

  • httpd CBL-Mariner 2.0 2.4.53-1

azure linux advisories AZL-9017

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2022-22721 updated cvss 7.4

httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody

  • 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 Enterprise Application Platform 6 httpd, mod_ssl, mod_ldap, httpd-tools, httpd-manual
    affected: workaround, no fix planned “Out of support scope”
  • 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 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 RHSA-2022:8067
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2022:8841
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd 2.4.51-37.el7jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el7jbcs, jbcs-httpd24-mod_ldap 2.4.51-37.el7jbcs, jbcs-httpd24-httpd-tools 2.4.51-37.el7jbcs, jbcs-httpd24-mod_session 2.4.51-37.el7jbcs, jbcs-httpd24-httpd-manual 2.4.51-37.el7jbcs, +2 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd 2.4.51-37.el8jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el8jbcs, jbcs-httpd24-mod_ldap 2.4.51-37.el8jbcs, jbcs-httpd24-httpd-tools 2.4.51-37.el8jbcs, jbcs-httpd24-mod_session 2.4.51-37.el8jbcs, jbcs-httpd24-httpd-manual 2.4.51-37.el8jbcs, +2 more
    fixed: vendor fix RHSA-2022:8840
  • 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 RHSA-2022:6753
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 7.86.0-2.el7jbcs, jbcs-httpd24-mod_md 2.4.0-18.el7jbcs, jbcs-httpd24-libcurl 7.86.0-2.el7jbcs, jbcs-httpd24-apr-util 1.6.1-99.el7jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el7jbcs, jbcs-httpd24-openssl 1.1.1k-13.el7jbcs, +16 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 7.86.0-2.el8jbcs, jbcs-httpd24-mod_md 2.4.0-18.el8jbcs, jbcs-httpd24-libcurl 7.86.0-2.el8jbcs, jbcs-httpd24-apr-util 1.6.1-99.el8jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el8jbcs, jbcs-httpd24-openssl 1.1.1k-13.el8jbcs, +16 more
    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

Exploit prediction

41.86% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:N/I:P/A:P
OSV 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami apache
<2.4.53
2.4.53

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
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.