Vulnerability Monitor

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CVE-2021-40438

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

Published

2021-09-16T15:15:07.633

Last Modified

2025-05-16T15:27:13.890

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 9.0 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-918
Type: Primary
CWE-918

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	resf	rocky_linux	8.0	Yes
Application	redhat	jboss_core_services	1.0	Yes
Operating System	redhat	enterprise_linux	7.0	No
Operating System	redhat	enterprise_linux	8.0	No
Application	redhat	software_collections	1.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	No
Operating System	redhat	enterprise_linux_server_workstation	7.0	No
Operating System	redhat	enterprise_linux	8.0	Yes
Operating System	redhat	enterprise_linux_eus	8.1	Yes
Operating System	redhat	enterprise_linux_eus	8.2	Yes
Operating System	redhat	enterprise_linux_eus	8.4	Yes
Operating System	redhat	enterprise_linux_eus	8.6	Yes
Operating System	redhat	enterprise_linux_eus	8.8	Yes
Operating System	redhat	enterprise_linux_for_arm_64	8.0	Yes
Operating System	redhat	enterprise_linux_for_arm_64_eus	8.6	Yes
Operating System	redhat	enterprise_linux_for_arm_64_eus	8.8	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems	7.0_s390x	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems	8.0	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus	8.1	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus	8.4	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus	8.8	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus_s390x	8.2	Yes
Operating System	redhat	enterprise_linux_for_power_big_endian	7.0	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian	7.0	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian	8.0	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.1	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.2	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.4	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.6	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.8	Yes
Operating System	redhat	enterprise_linux_for_scientific_computing	7.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_aus	7.2	Yes
Operating System	redhat	enterprise_linux_server_aus	7.3	Yes
Operating System	redhat	enterprise_linux_server_aus	7.4	Yes
Operating System	redhat	enterprise_linux_server_aus	7.6	Yes
Operating System	redhat	enterprise_linux_server_aus	7.7	Yes
Operating System	redhat	enterprise_linux_server_aus	8.2	Yes
Operating System	redhat	enterprise_linux_server_aus	8.4	Yes
Operating System	redhat	enterprise_linux_server_aus	8.6	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	7.6	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	7.7	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.1	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.2	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.4	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.6	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.8	Yes
Operating System	redhat	enterprise_linux_server_tus	7.6	Yes
Operating System	redhat	enterprise_linux_server_tus	7.7	Yes
Operating System	redhat	enterprise_linux_server_tus	8.2	Yes
Operating System	redhat	enterprise_linux_server_tus	8.4	Yes
Operating System	redhat	enterprise_linux_server_tus	8.6	Yes
Operating System	redhat	enterprise_linux_server_tus	8.8	Yes
Operating System	redhat	enterprise_linux_server_update_services_for_sap_solutions	7.6	Yes
Operating System	redhat	enterprise_linux_server_update_services_for_sap_solutions	7.7	Yes
Operating System	redhat	enterprise_linux_update_services_for_sap_solutions	8.1	Yes
Operating System	redhat	enterprise_linux_update_services_for_sap_solutions	8.2	Yes
Operating System	redhat	enterprise_linux_update_services_for_sap_solutions	8.4	Yes
Operating System	redhat	enterprise_linux_update_services_for_sap_solutions	8.6	Yes
Operating System	redhat	enterprise_linux_update_services_for_sap_solutions	8.8	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes
Application	apache	http_server	≤ 2.4.48	Yes
Operating System	fedoraproject	fedora	34	Yes
Operating System	fedoraproject	fedora	35	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes
Application	netapp	cloud_backup	-	Yes
Application	netapp	clustered_data_ontap	-	Yes
Application	netapp	storagegrid	-	Yes
Operating System	broadcom	brocade_fabric_operating_system_firmware	-	Yes
Operating System	f5	f5os	≤ 1.1.4	Yes
Operating System	f5	f5os	≤ 1.2.1	Yes
Application	oracle	enterprise_manager_ops_center	12.4.0.0	Yes
Application	oracle	http_server	12.2.1.3.0	Yes
Application	oracle	http_server	12.2.1.4.0	Yes
Application	oracle	instantis_enterprisetrack	17.1	Yes
Application	oracle	instantis_enterprisetrack	17.2	Yes
Application	oracle	instantis_enterprisetrack	17.3	Yes
Application	oracle	secure_global_desktop	5.6	Yes
Application	oracle	zfs_storage_appliance_kit	8.8	Yes
Application	siemens	ruggedcom_nms	*	Yes
Application	siemens	sinec_nms	< 1.0.3	Yes
Application	siemens	sinema_remote_connect_server	< 3.1	Yes
Application	siemens	sinema_remote_connect_server	3.2	Yes
Application	siemens	sinema_server	14.0	Yes
Application	tenable	tenable.sc	≤ 5.19.1	Yes

References

https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf Third Party Advisory ([email protected])
https://httpd.apache.org/security/vulnerabilities_24.html Release Notes, Vendor Advisory ([email protected])
https://lists.apache.org/thread.html/r210807d0bb55f4aa6fbe1512be6bcc4dacd64e84940429fba329967a%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/r2eb200ac1340f69aa22af61ab34780c531d110437910cb9c0ece3b37%40%3Cbugs.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/r3925e167d5eb1c75def3750c155d753064e1d34a143028bb32910432%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/r82c077663f9759c7df5a6656f925b3ee4f55fcd33c889ba7cd687029%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.apache.org/thread.html/rf6954e60b1c8e480678ce3d02f61b8a788997785652e9557a3265c00%40%3Cusers.httpd.apache.org%3E Mailing List ([email protected])
https://lists.debian.org/debian-lts-announce/2021/10/msg00001.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/ Release Notes ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/ Release Notes ([email protected])
https://security.gentoo.org/glsa/202208-20 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20211008-0004/ Third Party Advisory ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-2.4.49-VWL69sWQ Broken Link, Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4982 Mailing List, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory ([email protected])
https://www.tenable.com/security/tns-2021-17 Third Party Advisory ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://httpd.apache.org/security/vulnerabilities_24.html Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r210807d0bb55f4aa6fbe1512be6bcc4dacd64e84940429fba329967a%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r2eb200ac1340f69aa22af61ab34780c531d110437910cb9c0ece3b37%40%3Cbugs.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r3925e167d5eb1c75def3750c155d753064e1d34a143028bb32910432%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r82c077663f9759c7df5a6656f925b3ee4f55fcd33c889ba7cd687029%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/rf6954e60b1c8e480678ce3d02f61b8a788997785652e9557a3265c00%40%3Cusers.httpd.apache.org%3E Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/10/msg00001.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/ Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/ Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202208-20 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20211008-0004/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-2.4.49-VWL69sWQ Broken Link, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4982 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.tenable.com/security/tns-2021-17 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)