CVE-2022-22721: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody

Published Mar 14, 2022
·
Updated

A flaw was found in httpd, where it incorrectly limits the value of the LimitXMLRequestBody option. This issue can lead to an integer overflow and later causes an out-of-bounds write.

Other sources

AMD. A buffer overflow issue was addressed with improved memory handling.

— Apple

AMD. A memory corruption issue was addressed with improved state management.

— Apple

apache. Multiple issues were addressed by updating apache to version 2.4.53.

— Apple

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.

Credit

CVE-2021-44224, CVE-2021-44790, CVE-2022-22719, CVE-2022-22720, CVE-2022-22721, Lockheed Martin Red Team, an anonymous researcher, Jeremy Brown(Trend Micro Zero Day Initiative), Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), Qi Sun(Trend Micro), Ye Zhang@@co0py_Cat(Baidu Security), Robert Ai(Trend Micro), Arsenii Kostromin (0x3c3e), Yonghwi Jin@@jinmo123(Theori), Linus Henze(Pinauten GmbH), Liu Long(Ant Security Light), Jack Dates(RET2 Systems Inc), Antonio Zekic@@antoniozekic, Jeonghoon Shin(Theori working with Trend Micro Zero Day Initiative), Peter Nguyễn Vũ Hoàng@@peternguyen14(STAR Labs), Ned Williamson(Google Project Zero), @@gorelics(BreakPoint), (BreakPoint), Ron Masas(BreakPoint), Wojciech Reguła@@_r3ggi(SecuRing), Arsenii Kostromin (0x3c3e)(Microsoft), Jonathan Bar Or(Microsoft), Zhipeng Huo@@R3dF09(Tencent Security Xuanwu Lab), Yuebin Sun@@yuebinsun2020(Tencent Security Xuanwu Lab), Max Shavrick@@_mxms(the Google Security Team), Zubair Ashraf(Crowdstrike), CVE-2022-0778, CVE-2022-23308, Mickey Jin@@patch1t, @@gorelics, Peter Nguyễn Vũ Hoàng(STAR Labs), Felix Poulin-Belanger, Antonio Cheong Yu Xuan(YCISCQ), CVE-2021-4136, CVE-2021-4166, CVE-2021-4173, CVE-2021-4187, CVE-2021-4192, CVE-2021-4193, CVE-2021-46059, CVE-2022-0128, Heige(KnownSec 404 Team), Bo Qu(Palo Alto Networks), Scarlet Raine, Wang Yu(Cyberserval), CVE-2022-0530, Tavis Ormandy, CVE-2021-45444, ABC Research s.r.o, Jon Thompson(Evolve), IA), actae0n(Blacksun Hackers Club working with Trend Micro Zero Day Initiative), Andrew Williams(Google), Avi Drissman(Google), chenyuwang@@mzzzz__(Tencent Security Xuanwu Lab), Jordy Zomer@@pwningsystems, Paul Walker(Bury), Nathaniel Ekoniak(Ennate Technologies), Gergely Kalman@@gergely_kalman(Mandiant), (Mandiant), Joshua Mason(Mandiant), Ron Waisberg(SecuRing), an anonymous researcher(SecuRing), (Perception Point), Ron Hass@@ronhass7(Perception Point), ryuzaki, Chijin Zhou(ShuiMuYuLin Ltd), Tsinghua wingtecher lab, Jeonghoon Shin(Theori), SorryMybad@@S0rryMybad(Kunlun Lab), Dongzhuo Zhao(ADLab of Venustech)

Affected Software

32 affected componentsFixes available
redhat/jbcs-httpd24-httpd<0:2.4.51-37.el8
0:2.4.51-37.el8
redhat/jbcs-httpd24-httpd<0:2.4.51-37.el7
0:2.4.51-37.el7
redhat/httpd<0:2.4.53-7.el9
0:2.4.53-7.el9
redhat/httpd24-httpd<0:2.4.34-23.el7.5
0:2.4.34-23.el7.5
redhat/httpd<2.4.53
2.4.53
Apple macOS Big Sur<11.6.6
11.6.6
Apple Catalina
Apple macOS Monterey<12.4
12.4
Apache HTTP Server<=2.4.52
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Debian Debian Linux=9.0
Oracle Enterprise Manager Ops Center=12.4.0.0
Oracle HTTP Server=12.2.1.3.0
Oracle HTTP Server=12.2.1.4.0
Oracle ZFS Storage Appliance Kit=8.8
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-security_update_2021-003
Apple iOS and macOS=10.15.7-security_update_2021-004
Apple iOS and macOS=10.15.7-security_update_2021-005
Apple iOS and macOS=10.15.7-security_update_2021-006
Apple iOS and macOS=10.15.7-security_update_2021-007
Apple iOS and macOS=10.15.7-security_update_2021-008
Apple iOS and macOS=10.15.7-security_update_2022-001
Apple iOS and macOS=10.15.7-security_update_2022-002
Apple iOS and macOS=10.15.7-security_update_2022-003
Apple macOS>=11.0<11.6.6
Apple macOS>=12.0<12.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.51-37.el8
  2. Upgrade

    Upgrade redhat/jbcs-httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.51-37.el7
  3. Upgrade

    Upgrade redhat/httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.53-7.el9
  4. Upgrade

    Upgrade redhat/httpd24-httpd to a version that resolves this vulnerability.

    Fixed in 0:2.4.34-23.el7.5
  5. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in 11.6.6
  6. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.4
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 12.4
  8. Upgrade

    Upgrade redhat/httpd to a version that resolves this vulnerability.

    Fixed in 2.4.53
  9. Upgrade

    Upgrade apache (Apache HTTP Server) to a version that resolves this vulnerability.

    Fixed in 2.4.53
  10. Configuration

    Set the LimitXMLRequestBody option to a value smaller than 350MB (defaults to 1M).

    Apache HTTP Server core LimitXMLRequestBody = < 350MB
  11. Configuration

    Do not set LimitXMLRequestBody to 0, since it uses a hard limit (depending on 32-bit or 64-bit systems) that may result in an overall system out-of-memory.

    Apache HTTP Server core LimitXMLRequestBody = not recommended: 0

Event History

Mar 14, 2022
CVE Published
12:00 AM
CVE Published
via MITRE·10:15 AM
Data Sourced
via MITRE·10:15 AM
DescriptionWeakness
Mar 15, 2022
Data Sourced
via Red Hat·02:34 PM
DescriptionSeverityAffected Software
May 16, 2022
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
Description
Updated
via Apple·12:00 AM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2022-22721?

CVE-2022-22721 is a vulnerability in Apache HTTP Server where an integer overflow occurs when LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32-bit systems, which can lead to out-of-bounds writes.

2

How does CVE-2022-22721 affect Apache HTTP Server?

CVE-2022-22721 affects Apache HTTP Server version 2.4.52 and earlier.

3

What is the severity of CVE-2022-22721?

CVE-2022-22721 has a severity rating of high (7).

4

How can I fix CVE-2022-22721?

To fix CVE-2022-22721, update Apache HTTP Server to version 2.4.53 or later.

5

Where can I find more information about CVE-2022-22721?

You can find more information about CVE-2022-22721 at the following references: [Link 1](https://support.apple.com/en-us/HT213257), [Link 2](https://support.apple.com/en-us/HT213255), [Link 3](https://support.apple.com/en-us/HT213256).

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