CVE-2020-11993high
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
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
References
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993
https://security.gentoo.org/glsa/202008-04
https://lists.apache.org/thread.html/[email protected]%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cdev.httpd.apache.org%3E
https://security.netapp.com/advisory/ntap-20200814-0005/
https://usn.ubuntu.com/4458-1/
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html
https://www.debian.org/security/2020/dsa-4757
https://www.oracle.com/security-alerts/cpuoct2020.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html
http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
Details
Source: MITRE
Published: 2020-08-07
Updated: 2021-06-06
Type: CWE-444
Risk Information
CVSS v2
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
CVSS v3
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions from 2.4.20 to 2.4.43 (inclusive)
Configuration 2
OR
Configuration 3
OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Configuration 4
OR
Configuration 5
OR
Configuration 6
OR
Configuration 7
OR
cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:* versions from 8.2.0 to 8.2.2 (inclusive)
cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* versions from 8.2.0 to 8.2.2 (inclusive)
cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* versions from 8.2.0 to 8.2.2 (inclusive)
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 149913 | Oracle Linux 8 : httpd:2.4 (ELSA-2021-1809) | Nessus | Oracle Linux Local Security Checks | critical |
| 149737 | CentOS 8 : httpd:2.4 (CESA-2021:1809) | Nessus | CentOS Local Security Checks | critical |
| 149696 | RHEL 8 : httpd:2.4 (RHSA-2021:1809) | Nessus | Red Hat Local Security Checks | critical |
| 147602 | EulerOS Virtualization 2.9.1 : httpd (EulerOS-SA-2021-1602) | Nessus | Huawei Local Security Checks | critical |
| 143613 | SUSE SLES15 Security Update : apache2 (SUSE-SU-2020:3067-1) | Nessus | SuSE Local Security Checks | high |
| 143158 | Amazon Linux 2 : httpd (ALAS-2020-1490) | Nessus | Amazon Linux Local Security Checks | critical |
| 142207 | openSUSE Security Update : apache2 (openSUSE-2020-1792) | Nessus | SuSE Local Security Checks | high |
| 142025 | RHEL 6 / 7 : Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP5 (RHSA-2020:4384) | Nessus | Red Hat Local Security Checks | critical |
| 140966 | EulerOS Virtualization for ARM 64 3.0.6.0 : httpd (EulerOS-SA-2020-2018) | Nessus | Huawei Local Security Checks | critical |
| 140635 | Amazon Linux 2 : mod_http2 (ALAS-2020-1493) | Nessus | Amazon Linux Local Security Checks | high |
| 112580 | Apache 2.4.x < 2.4.46 Multiple Vulnerabilities | Web Application Scanning | Component Vulnerability | critical |
| 140252 | SUSE SLES12 Security Update : apache2 (SUSE-SU-2020:2450-1) | Nessus | SuSE Local Security Checks | medium |
| 140104 | Debian DSA-4757-1 : apache2 - security update | Nessus | Debian Local Security Checks | critical |
| 140086 | Amazon Linux AMI : httpd24 (ALAS-2020-1418) | Nessus | Amazon Linux Local Security Checks | critical |
| 140078 | openSUSE Security Update : apache2 (openSUSE-2020-1293) | Nessus | SuSE Local Security Checks | critical |
| 140076 | openSUSE Security Update : apache2 (openSUSE-2020-1285) | Nessus | SuSE Local Security Checks | critical |
| 139957 | EulerOS 2.0 SP8 : httpd (EulerOS-SA-2020-1854) | Nessus | Huawei Local Security Checks | critical |
| 139906 | SUSE SLES15 Security Update : apache2 (SUSE-SU-2020:2344-1) | Nessus | SuSE Local Security Checks | critical |
| 139884 | Fedora 31 : mod_http2 (2020-b58dc5df38) | Nessus | Fedora Local Security Checks | high |
| 139844 | SUSE SLED15 / SLES15 Security Update : apache2 (SUSE-SU-2020:2311-1) | Nessus | SuSE Local Security Checks | critical |
| 139736 | Fedora 32 : mod_http2 (2020-8122a8daa2) | Nessus | Fedora Local Security Checks | high |
| 139697 | Photon OS 1.0: Httpd PHSA-2020-1.0-0313 | Nessus | PhotonOS Local Security Checks | critical |
| 139612 | Photon OS 3.0: Httpd PHSA-2020-3.0-0125 | Nessus | PhotonOS Local Security Checks | critical |
| 139609 | Photon OS 2.0: Httpd PHSA-2020-2.0-0272 | Nessus | PhotonOS Local Security Checks | critical |
| 139596 | Ubuntu 16.04 LTS / 18.04 LTS / 20.04 : Apache HTTP Server vulnerabilities (USN-4458-1) | Nessus | Ubuntu Local Security Checks | critical |
| 139574 | Apache 2.4.x < 2.4.46 Multiple Vulnerabilities | Nessus | Web Servers | critical |
| 139439 | GLSA-202008-04 : Apache: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | critical |
| 139436 | FreeBSD : Apache httpd -- Multiple vulnerabilities (76700d2f-d959-11ea-b53c-d4c9ef517024) | Nessus | FreeBSD Local Security Checks | critical |