CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2020-11993
High (7.5). EPSS 56% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 56% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-11-01)
- CWE
- CWE-444
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:http_server
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- netapp:clustered_data_ontap
- opensuse:leap
- oracle:communications_element_manager
- oracle:communications_session_report_manager
- oracle:communications_session_route_manager
- oracle:enterprise_manager_ops_center
- oracle:hyperion_infrastructure_technology
- oracle:instantis_enterprisetrack
- oracle:zfs_storage_appliance_kit
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.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://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993