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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | >= 2.4.20, < 2.4.44 |
| Netapp | Clustered Data Ontap | - |
| Canonical | Ubuntu Linux | 16.04 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 31 |
| Oracle | Communications Element Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Communications Session Report Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Communications Session Route Manager | >= 8.2.0, <= 8.2.2 |
| Oracle | Enterprise Manager Ops Center | 12.4.0.0 |
| Oracle | Hyperion Infrastructure Technology | 11.1.2.4 |
| Oracle | Instantis Enterprisetrack | 17.1 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.htmlMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-PooExploitThird Party AdvisoryVDB Entry
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993Vendor Advisory
- https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfdaPatch
- https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09dPatch
- https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693bPatch
- https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46Patch
- https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d60Patch
- https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b269Patch
- https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37Patch
- https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fPatch
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f8Patch
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaaPatch
FAQ
What is CVE-2020-11993?
CVE-2020-11993 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 conc...
How severe is CVE-2020-11993?
CVE-2020-11993 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11993?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server, Netapp Clustered Data Ontap, Canonical Ubuntu Linux, Opensuse Leap, Debian Debian Linux.