CVE-2022-22721

core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Si LimitXMLRequestBody está configurado para permitir cuerpos de petición de más de 350 MB (por defecto 1M) en sistemas de 32 bits, es producido un desbordamiento de enteros que causa posteriormente escrituras fuera de límites. Este problema afecta a Apache HTTP Server 2.4.52 y anteriores

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.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apache HTTPD Server. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the ap_escape_html2 function. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.

*Credits: Anonymous working with Trend Micro Zero Day Initiative

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-01-06 CVE Reserved
2022-03-14 CVE Published
2024-08-03 CVE Updated
2024-10-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound
CWE-787: Out-of-bounds Write

CAPEC

References (18)

URL	Tag	Source
http://seclists.org/fulldisclosure/2022/May/33	Mailing List
http://seclists.org/fulldisclosure/2022/May/35	Mailing List
http://seclists.org/fulldisclosure/2022/May/38	Mailing List
http://www.openwall.com/lists/oss-security/2022/03/14/2	Mailing List
https://lists.debian.org/debian-lts-announce/2022/03/msg00033.html	Mailing List
https://security.netapp.com/advisory/ntap-20220321-0001	Third Party Advisory
https://support.apple.com/kb/HT213255	Third Party Advisory
https://support.apple.com/kb/HT213256	Third Party Advisory
https://support.apple.com/kb/HT213257	Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2023-11-07

URL	Date	SRC
https://httpd.apache.org/security/vulnerabilities_24.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD	2023-11-07
https://security.gentoo.org/glsa/202208-20	2023-11-07
https://access.redhat.com/security/cve/CVE-2022-22721	2022-12-08
https://bugzilla.redhat.com/show_bug.cgi?id=2064320	2022-12-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Http Server Search vendor "Apache" for product "Http Server"				<= 2.4.52 Search vendor "Apache" for product "Http Server" and version " <= 2.4.52"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Oracle Search vendor "Oracle"		Enterprise Manager Ops Center Search vendor "Oracle" for product "Enterprise Manager Ops Center"				12.4.0.0 Search vendor "Oracle" for product "Enterprise Manager Ops Center" and version "12.4.0.0"		-		Affected
Oracle Search vendor "Oracle"		Http Server Search vendor "Oracle" for product "Http Server"				12.2.1.3.0 Search vendor "Oracle" for product "Http Server" and version "12.2.1.3.0"		-		Affected
Oracle Search vendor "Oracle"		Http Server Search vendor "Oracle" for product "Http Server"				12.2.1.4.0 Search vendor "Oracle" for product "Http Server" and version "12.2.1.4.0"		-		Affected
Oracle Search vendor "Oracle"		Zfs Storage Appliance Kit Search vendor "Oracle" for product "Zfs Storage Appliance Kit"				8.8 Search vendor "Oracle" for product "Zfs Storage Appliance Kit" and version "8.8"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				>= 10.15 < 10.15.7 Search vendor "Apple" for product "Mac Os X" and version " >= 10.15 < 10.15.7"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2020-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-003		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-004		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-005		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-006		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-007		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-008		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2022-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2022-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2022-003		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 11.0 < 11.6.6 Search vendor "Apple" for product "Macos" and version " >= 11.0 < 11.6.6"		-		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 12.0 < 12.4 Search vendor "Apple" for product "Macos" and version " >= 12.0 < 12.4"		-		Affected