Vulnerability in Apache Http Server
CVE-2019-0197
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
Vulnerability class: HTTP Request Smuggling
EPSS: 0.084 (94.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L.
Affected products
- Apache Http_server
- Apache Software Foundation Http Server — versions 2.4.34 to 2.4.38
- Oracle Communications_session_report_manager — versions 8.0.0, 8.1.0, 8.1.1
- Oracle Communications_session_route_manager — versions 8.0.0, 8.1.0, 8.1.1
- Oracle Enterprise_manager_ops_center — versions 12.3.3, 12.4.0
- Oracle Http_server — versions 12.2.1.3.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Retail_xstore_point_of_service — versions 7.0, 7.1
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.04
- Fedoraproject Fedora — versions 30
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_CONFIRM, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (x_refsource_MISC)
- security@apache.org (vendor-advisory, Patch, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@apache.org (vendor-advisory, Patch, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@apache.org (vendor-advisory, Patch, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-0197?
- CVE-2019-0197 is a medium-severity vulnerability in Apache Http Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 4.2/10. Published 2019-06-11.
- How severe is CVE-2019-0197?
- Medium severity. CVSS v3 base score is 4.2 out of 10.
- Is CVE-2019-0197 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.