Vulnerability Details : CVE-2016-6817
The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.
Vulnerability category: Denial of service
Products affected by CVE-2016-6817
- cpe:2.3:a:apache:tomcat:8.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:8.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
Threat overview for CVE-2016-6817
Top countries where our scanners detected CVE-2016-6817
Top open port discovered on systems with this issue
80
IPs affected by CVE-2016-6817 7,344
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2016-6817!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2016-6817
2.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-6817
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-10-15 |
CWE ids for CVE-2016-6817
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2016-6817
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https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E
svn commit: r1857582 [19/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ - Pony Mail
-
https://security.netapp.com/advisory/ntap-20180607-0001/
November 2016 Apache Tomcat Vulnerabilities in NetApp Products | NetApp Product Security
-
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E
Pony Mail!
-
https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a@%3Cannounce.tomcat.apache.org%3E
Pony Mail!Vendor Advisory
-
http://www.securitytracker.com/id/1037330
Apache Tomcat HTTP/2 Header Parsing Error Lets Remote Users Deny Service - SecurityTrackerThird Party Advisory;VDB Entry
-
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
Apache Mail Archives
-
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
Apache Mail Archives
-
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
Apache Mail Archives
-
https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a%40%3Cannounce.tomcat.apache.org%3E
[SECURITY] CVE-2016-6817 Apache Tomcat Denial of Service-Apache Mail Archives
-
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E
svn commit: r1855831 [25/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ - Pony Mail
-
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
Apache Mail Archives
-
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E
svn commit: r1857494 [17/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ - Pony Mail
-
http://www.securityfocus.com/bid/94462
Apache Tomcat CVE-2016-6817 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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