Vulnerability in Apache Tomcat
CVE-2017-5650
In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, the handling of an HTTP/2 GOAWAY frame for a connection did not close streams associated with that connection that were currently waiting for a WINDOW_UPDATE before allowing the application to write more data. These waiting streams each consumed a thread. A malicious client could therefore construct a series of HTTP/2 requests that would consume all available processing threads.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.083 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.083 · newest: 0.083 · change: 0.000
Affected products
- Apache Tomcat — versions 8.5.0, 8.5.1, 8.5.2
- Apache Software Foundation Tomcat — versions 8.5.0 to 8.5.12, 9.0.0.M1 to 9.0.0.M18
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/97531 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201705-09 (vendor-advisory)
- security.netapp.com/advisory/ntap-20180614-0001/
- www.securitytracker.com/id/1038217 (vdb-entry)
- lists.apache.org/thread.html/d24303fb095db072740d8154b0f0db3f2b8f67bc91a0562dbe… (mailing-list)
- www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa… (mailing-list)
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f… (mailing-list)
- lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f8… (mailing-list)
- lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745a… (mailing-list)
Frequently asked questions
- What is CVE-2017-5650?
- CVE-2017-5650 is a high-severity vulnerability in Apache Tomcat, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2017-04-17.
- How severe is CVE-2017-5650?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-5650 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.