Vulnerability in Apache Http_server
CVE-2020-11993
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…
Vulnerability class: HTTP Request Smuggling
EPSS: 0.587 (99.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Http_server
- Netapp Clustered_data_ontap
- Oracle Communications_element_manager
- Oracle Communications_session_report_manager
- Oracle Communications_session_route_manager
- Oracle Enterprise_manager_ops_center — versions 12.4.0.0
- Oracle Hyperion_infrastructure_technology — versions 11.1.2.4
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Zfs_storage_appliance_kit — versions 8.8
- Canonical Ubuntu_linux — versions 16.04, 18.04, 20.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_MISC, Vendor Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- security@apache.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@apache.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2020-11993?
- CVE-2020-11993 is a high-severity vulnerability in Apache Http_server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2020-08-07.
- How severe is CVE-2020-11993?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-11993 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.