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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.087 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.087 · newest: 0.087 · change: 0.000
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
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- www.openwall.com/lists/oss-security/2019/04/02/2 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/107665 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.apache.org/thread.html/e0b8f6e858b1c8ec2ce8e291a2c543d438915037c7af661ab6…
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
- support.f5.com/csp/article/K44591505 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20190617-0002/ (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.