CVE-2021-44224

Published on: Not Yet Published

Last Modified on: 01/12/2022 08:15:00 PM UTC

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

Certain versions of Http Server from Apache contain the following vulnerability:

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).

  • CVE-2021-44224 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache HTTP Server version >= 2.4.7
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache HTTP Server version <= 2.4.51

CVSS3 Score: 8.2 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE LOW HIGH

CVSS2 Score: 6.4 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE PARTIAL PARTIAL

CVE References

Description Tags Link
Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project httpd.apache.org
text/html
URL Logo MISC httpd.apache.org/security/vulnerabilities_24.html
[R1] Tenable.sc 5.20.0 Fixes Multiple Vulnerabilities - Security Advisory | Tenable® www.tenable.com
text/html
URL Logo CONFIRM www.tenable.com/security/tns-2022-01
oss-security - CVE-2021-44224: Apache HTTP Server: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier www.openwall.com
text/html
URL Logo MLIST [oss-security] 20211220 CVE-2021-44224: Apache HTTP Server: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier
Debian -- Security Information -- DSA-5035-1 apache2 www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-5035
[R1] Stand-alone Security Patch Available for Tenable.sc versions 5.16.0 to 5.19.1: Patch 202201.1 - Security Advisory | Tenable® www.tenable.com
text/html
URL Logo CONFIRM www.tenable.com/security/tns-2022-03
[SECURITY] Fedora 35 Update: httpd-2.4.52-1.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-29a536c2ae
December 2021 Apache HTTP Server Vulnerabilities in NetApp Products | NetApp Product Security security.netapp.com
text/html
URL Logo CONFIRM security.netapp.com/advisory/ntap-20211224-0001/

Related QID Numbers

  • 150456 Apache HTTP Server NULL pointer dereference and Server Side Request Forgery (SSRF) Vulnerability (CVE-2021-44224)
  • 178985 Debian Security Update for apache2 (DSA 5035-1)
  • 198620 Ubuntu Security Notification for Apache Hypertext Transfer Protocol (HTTP) Server Vulnerabilities (USN-5212-1)
  • 282186 Fedora Security Update for httpd (FEDORA-2021-29a536c2ae)
  • 353114 Amazon Linux Security Advisory for httpd24 : ALAS-2022-1560
  • 690751 Free Berkeley Software Distribution (FreeBSD) Security Update for apache httpd (ca982e2d-61a9-11ec-8be6-d4c9ef517024)
  • 730313 Apache Hypertext Transfer Protocol (HTTP) Server NULL Pointer Dereference and Server Side Request Forgery (SSRF) Vulnerability
  • 751596 SUSE Enterprise Linux Security Update for apache2 (SUSE-SU-2022:0065-1)
  • 751604 OpenSUSE Security Update for apache2 (openSUSE-SU-2022:0091-1)
  • 751606 SUSE Enterprise Linux Security Update for apache2 (SUSE-SU-2022:0119-1)
  • 900352 Common Base Linux Mariner (CBL-Mariner) Security Update for httpd (7034)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationApacheHttp ServerAllAllAllAll
Operating
System
FedoraprojectFedora35AllAllAll
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:

Discovery Credit

漂亮鼠

TengMA(@Te3t123)

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-44224 : A crafted URI sent to httpd configured as a forward proxy ProxyRequests on can cause a crash NU… twitter.com/i/web/status/1… 2021-12-20 11:22:43
Twitter Icon @omokazuki SIOSセキュリティブログを更新しました。 Apache HTTP Serverの脆弱性情報(Moderate: CVE-2021-44224, High: CVE-2021-44790)と新バージョン(2.4.52)… twitter.com/i/web/status/1… 2021-12-20 13:14:27
Reddit Logo Icon /r/netcve CVE-2021-44224 2021-12-20 11:38:30
Reddit Logo Icon /r/sysadmin Apache Releases Security Update for HTTP Server 2021-12-22 23:20:37
Reddit Logo Icon /r/vulnintel Two Apache HTTP Server vulnerabilities have been released. One of them is an Unauthenticated RCE 2021-12-23 10:53:01
Reddit Logo Icon /r/sysadmin Another apache and AD vulnerabilities to patch. 2021-12-23 21:05:03
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