CVE-2024-1635
"Undertow Wildfly-HTTP-Client Memory Exhaustion and Connection Leak"
Description
A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available. At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak.
INFO
Published Date :
Feb. 19, 2024, 10:15 p.m.
Last Modified :
Sept. 16, 2024, 5:16 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2024-1635 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-1635.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-1635 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-1635 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
Sep. 16, 2024
Action Type Old Value New Value Removed Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240322-0007/ -
CVE Modified by [email protected]
Jun. 24, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 05, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 05, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 31, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 15, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 17, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1860 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1861 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1862 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1864 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1866 [No types assigned] -
CVE Modified by [email protected]
Apr. 04, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1674 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1675 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1676 [No types assigned] Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1677 [No types assigned] -
CVE Modified by [email protected]
Mar. 22, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240322-0007/ [No types assigned] -
CVE Received by [email protected]
Feb. 19, 2024
Action Type Old Value New Value Added Description A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available. At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak. Added Reference Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-1635 [No types assigned] Added Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2264928 [No types assigned] Added CWE Red Hat, Inc. CWE-400 Added CVSS V3.1 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-1635 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-1635
weaknesses.