{"id":"CVE-2020-11993","details":"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.","aliases":["BIT-apache-2020-11993"],"modified":"2026-04-16T00:06:36.344103050Z","published":"2020-08-07T16:15:11.887Z","related":["ALSA-2021:1809","SUSE-SU-2020:2311-1","SUSE-SU-2020:2344-1","SUSE-SU-2020:2450-1","SUSE-SU-2020:3067-1","openSUSE-SU-2020:1285-1","openSUSE-SU-2020:1293-1","openSUSE-SU-2020:1792-1"],"database_specific":{"unresolved_ranges":[{"cpe":"cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"8.2.0"},{"last_affected":"8.2.2"}]},{"cpe":"cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"8.2.0"},{"last_affected":"8.2.2"}]},{"cpe":"cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"8.2.0"},{"last_affected":"8.2.2"}]},{"cpe":"cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"12.4.0.0"}]},{"cpe":"cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"11.1.2.4"}]},{"cpe":"cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"17.1"}]},{"cpe":"cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"17.2"}]},{"cpe":"cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"17.3"}]},{"cpe":"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"8.8"}]},{"cpe":"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"16.04"}]},{"cpe":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"18.04"}]},{"cpe":"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"20.04"}]},{"cpe":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0"}]},{"cpe":"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"31"}]},{"cpe":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"32"}]},{"cpe":"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"15.1"}]},{"cpe":"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"last_affected":"15.2"}]}]},"references":[{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"},{"type":"ADVISORY","url":"https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202008-04"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200814-0005/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4458-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4757"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuoct2020.html"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E"},{"type":"FIX","url":"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"},{"type":"FIX","url":"https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