CVE-2021-44224

CVSS V2 Medium 6.4 CVSS V3 High 8.2

Description

A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).

Overview

CVE ID
CVE-2021-44224

Assigner
security@apache.org

Vulnerability Status
Analyzed

Published Version
2021-12-20T12:15:07

Last Modified Date
2022-11-02T13:18:35

Weakness Enumerations

CWE	URL
CWE-476	http://cwe.mitre.org/data/definitions/476.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:apache:http_server::::::::	1	OR	2.4.7	2.4.52
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:35:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:36:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:11.0:::::::*	1	OR
cpe:2.3:a:tenable:tenable.sc::::::::	1	OR	5.14.0	5.20.0
cpe:2.3:a:tenable:tenable.sc::::::::	1	OR	5.16.0	202201.1
cpe:2.3:a:oracle:communications_element_manager::::::::	1	OR		9.0
cpe:2.3:a:oracle:communications_operations_monitor:4.0:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:4.3:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:4.4:::::::*	1	OR
cpe:2.3:a:oracle:communications_operations_monitor:5.0:::::::*	1	OR
cpe:2.3:a:oracle:communications_session_report_manager::::::::	1	OR		9.0
cpe:2.3:a:oracle:communications_session_route_manager::::::::	1	OR		9.0
cpe:2.3:a:oracle:http_server:-:::::::*	1	OR
cpe:2.3:a:oracle:http_server:12.2.1.3.0:::::::*	1	OR
cpe:2.3:a:oracle:http_server:12.2.1.4.0:::::::*	1	OR
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:::::::*	1	OR
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:::::::*	1	OR
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:::::::*	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:::::::*	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-008::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-001::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-002::::::	1	OR
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-003::::::	1	OR
cpe:2.3:o:apple:macos::::::::	1	OR		10.15.7
cpe:2.3:o:apple:macos::::::::	1	OR	11.0	11.6.6
cpe:2.3:o:apple:macos::::::::	1	OR	12.0.0	12.4

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.4

Severity
MEDIUM

Exploitability Score
10

Impact Score
4.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
8.2

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
4.2

References

Reference URL	Reference Tags
http://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
http://seclists.org/fulldisclosure/2022/May/33	Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/35	Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/38	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/12/20/3	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-20	Third Party Advisory
https://security.netapp.com/advisory/ntap-20211224-0001/	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.debian.org/security/2022/dsa-5035	Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.tenable.com/security/tns-2022-01	Third Party Advisory
https://www.tenable.com/security/tns-2022-03	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-44224
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44224

History

Created	Old Value	New Value	Data Type	Notes
2022-04-04 00:41:42				Added to TrackCVE
2022-12-06 04:21:46	2021-12-20T12:15Z	2021-12-20T12:15:07	CVE Published Date	updated
2022-12-06 04:21:46		2022-11-02T13:18:35	CVE Modified Date	updated
2022-12-06 04:21:46		Analyzed	Vulnerability Status	updated
2022-12-06 04:21:52			References	updated