CVE-2020-11993
Apache HTTP Server HTTP/2 Memory Pool Vulnerability
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.
INFO
Published Date :
Aug. 7, 2020, 4:15 p.m.
Last Modified :
Nov. 7, 2023, 3:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-11993 has a 8 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-11993
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-11993.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
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CTF challenge attack vectors
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-11993 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-11993 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/ [No types assigned] Added Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/ [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E [No types assigned] Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E [No types assigned] Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/[email protected]/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/ Removed Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/[email protected]/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/ Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36@%3Ccvs.httpd.apache.org%3E Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E -
CVE Modified by [email protected]
Jun. 06, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Mar. 30, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36@%3Ccvs.httpd.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Mar. 30, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Mar. 30, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce@%3Ccvs.httpd.apache.org%3E [No Types Assigned] Added Reference https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775@%3Ccvs.httpd.apache.org%3E [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html Mailing List, Third Party Advisory Changed Reference Type http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html No Types Assigned http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E Mailing List, Vendor Advisory Changed Reference Type https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E Mailing List, Vendor Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/ Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20200814-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20200814-0005/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4458-1/ No Types Assigned https://usn.ubuntu.com/4458-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4757 No Types Assigned https://www.debian.org/security/2020/dsa-4757 Third Party Advisory Changed Reference Type https://www.oracle.com/security-alerts/cpujan2021.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2021.html Third Party Advisory Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2020.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2020.html Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (including) 8.2.2 *cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (including) 8.2.2 *cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (including) 8.2.2 *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:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 20, 2021
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpujan2021.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 07, 2020
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 02, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 20, 2020
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpuoct2020.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 01, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4757 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 30, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html [No Types Assigned] -
CVE Modified by [email protected]
Aug. 29, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html [No Types Assigned] -
CVE Modified by [email protected]
Aug. 26, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 21, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 19, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4458-1/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 14, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200814-0005/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 11, 2020
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Aug. 11, 2020
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 09, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993 No Types Assigned https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993 Vendor Advisory Changed Reference Type https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E Mailing List, Vendor Advisory Changed Reference Type https://security.gentoo.org/glsa/202008-04 No Types Assigned https://security.gentoo.org/glsa/202008-04 Third Party Advisory Added CWE NIST CWE-444 Added CPE Configuration OR *cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions from (including) 2.4.20 up to (including) 2.4.43 -
CVE Modified by [email protected]
Aug. 08, 2020
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Aug. 08, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202008-04 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-11993 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-11993
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.39 }} 0.05%
score
0.73452
percentile