CVE-2021-40438

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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.

References

https://httpd.apache.org/security/vulnerabilities_24.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://lists.fedoraproject.org/archives/list/[email protected]/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/

https://lists.debian.org/debian-lts-announce/2021/10/msg00001.html

https://security.netapp.com/advisory/ntap-20211008-0004/

https://lists.apache.org/thread.html/[email protected]%3Cbugs.httpd.apache.org%3E

https://www.debian.org/security/2021/dsa-4982

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.httpd.apache.org%3E

https://www.tenable.com/security/tns-2021-17

Details

Source: MITRE

Published: 2021-09-16

Updated: 2021-10-19

Type: CWE-918

Risk Information

CVSS v2

Base Score: 6.8

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

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 9

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

Impact Score: 6

Exploitability Score: 2.2

Severity: CRITICAL

Tenable Plugins

View all (25 total)

IDNameProductFamilySeverity
154240Tenable SecurityCenter < 5.19.0 Multiple Vulnerabilities (TNS-2021-17)NessusMisc.
critical
154188Amazon Linux AMI : httpd24 (ALAS-2021-1543)NessusAmazon Linux Local Security Checks
critical
154179Amazon Linux 2 : httpd (ALAS-2021-1716)NessusAmazon Linux Local Security Checks
critical
154168RHEL 7 : httpd (RHSA-2021:3856)NessusRed Hat Local Security Checks
critical
154164Oracle Linux 7 : httpd (ELSA-2021-3856)NessusOracle Linux Local Security Checks
critical
154128Oracle Linux 8 : httpd:2.4 (ELSA-2021-3816)NessusOracle Linux Local Security Checks
critical
154082RHEL 8 : httpd:2.4 (RHSA-2021:3837)NessusRed Hat Local Security Checks
critical
154081RHEL 8 : httpd:2.4 (RHSA-2021:3836)NessusRed Hat Local Security Checks
critical
154078RHEL 8 : httpd:2.4 (RHSA-2021:3816)NessusRed Hat Local Security Checks
critical
154067SUSE SLES15 Security Update : apache2 (SUSE-SU-2021:3335-1)NessusSuSE Local Security Checks
critical
154050CentOS 8 : httpd:2.4 (CESA-2021:3816)NessusCentOS Local Security Checks
critical
154019RHEL 7 : httpd24-httpd (RHSA-2021:3754)NessusRed Hat Local Security Checks
critical
153970Debian DSA-4982-1 : apache2 - security updateNessusDebian Local Security Checks
critical
153962Photon OS 2.0: Httpd PHSA-2021-2.0-0399NessusPhotonOS Local Security Checks
critical
153961Photon OS 3.0: Httpd PHSA-2021-3.0-0309NessusPhotonOS Local Security Checks
critical
153957Photon OS 1.0: Httpd PHSA-2021-1.0-0437NessusPhotonOS Local Security Checks
critical
153940RHEL 7 : Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP9 (RHSA-2021:3746)NessusRed Hat Local Security Checks
critical
153922SUSE SLED12 / SLES12 Security Update : apache2 (SUSE-SU-2021:3299-1)NessusSuSE Local Security Checks
critical
153842Debian DLA-2776-1 : apache2 - LTS security updateNessusDebian Local Security Checks
critical
153816FreeBSD : Apache httpd -- multiple vulnerabilities (882a38f9-17dd-11ec-b335-d4c9ef517024)NessusFreeBSD Local Security Checks
critical
153768Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : Apache HTTP Server vulnerabilities (USN-5090-1)NessusUbuntu Local Security Checks
critical
153766Ubuntu 16.04 LTS : Apache HTTP Server vulnerabilities (USN-5090-2)NessusUbuntu Local Security Checks
critical
153583Apache < 2.4.49 Multiple VulnerabilitiesNessusWeb Servers
critical
153456Slackware Linux 14.0 / 14.1 / 14.2 / current httpd Multiple Vulnerabilities (SSA:2021-259-01)NessusSlackware Local Security Checks
high
112981Apache 2.4.x < 2.4.49 Multiple VulnerabilitiesWeb Application ScanningComponent Vulnerability
critical