GHSA-9785-w233-x6hv CVE-2017-5650

Improper Resource Shutdown or Release in Apache Tomcat

High Maven

Severity: 7.5 / 10; High · CVSS 3.0
Exploit chance (EPSS): 8.28%; Chance of exploitation in the next 30 days. Higher than 94.91% of scored vulnerabilities.
Known exploited: No; Not in CISA's catalog
Weakness: CWE-404 Improper Resource Shutdown or Release
Fix: 9.0.0.M19; Upgrade org.apache.tomcat:tomcat to this version or later

Description

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.

Affected versions

Maven

Package	Vulnerable	Fixed in
org.apache.tomcat:tomcat	`>= 9.0.0.M1, < 9.0.0.M19`	`9.0.0.M19`
org.apache.tomcat:tomcat	`>= 8.5.0, < 8.5.13`	`8.5.13`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

org.apache.tomcat:tomcat Maven → `9.0.0.M19`

maven

<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat</artifactId><version>9.0.0.M19</version></dependency>

gradle

implementation("org.apache.tomcat:tomcat:9.0.0.M19")

Severity breakdown

CVSS 3.0 7.5

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Weakness

CWE-404: Improper Resource Shutdown or Release

The product does not release or incorrectly releases a resource before it is made available for re-use.

How to prevent it

Requirements: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.
Implementation: It is good practice to be responsible for freeing all resources you allocate and to be consistent with how and where you free memory in a function. If you allocate memory that you intend to free upon completion of the function, you must be sure to free the memory at all exit points for that function including error conditions.
Implementation: Memory should be allocated/freed using matching functions such as malloc/free, new/delete, and new[]/delete[].
Implementation: When releasing a complex object or structure, ensure that you properly dispose of all of its member components, not just the object itself.

References

Advisories

nvd.nist.gov/vuln/detail/CVE-2017-5650

Packages

github.com/apache/tomcat

Timeline

May 13, 2022 Published
Mar 11, 2024 Last updated by the source
Oct 31, 2026 Latest EPSS score

Advisory	Severity	Why it's related
GHSA-69r9-qgr7-g2wj Apache Tomcat Missing Encryption of Sensitive Data vulnerability	High Known exploited	Also affects org.apache.tomcat:tomcat
GHSA-h3x4-894j-xpx5 Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerability	Critical	Also affects org.apache.tomcat:tomcat
GHSA-9xv2-5v5q-p794 Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability	Critical	Also affects org.apache.tomcat:tomcat
GHSA-gcx9-497g-6cp6 Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability	Critical	Also affects org.apache.tomcat:tomcat
GHSA-5m62-pw8w-7w9f Apache Tomcat - Security constraints not correctly applied	Critical	Also affects org.apache.tomcat:tomcat
GHSA-9m89-8frq-c98c Apache Tomcat - AJP secret compared in non-constant time	Low	Also affects org.apache.tomcat:tomcat
GHSA-5mp6-jrq3-r938 Apache Tomcat: LockOutRealm treats user names as case-sensitive	High	Also affects org.apache.tomcat:tomcat
GHSA-h6fc-48rj-7qqh Apache Tomcat - Digest authenticator will authenticate any unknown user	Critical	Also affects org.apache.tomcat:tomcat

Is this in your code?

MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.

Check your repos with MergeHarbor