CWE-835 Detail

CWE-835

Name

Loop with Unreachable Exit Condition ('Infinite Loop')

Status

Incomplete

Published

2011-03-30
00h00 +00:00

Modified

2024-11-19
00h00 +00:00

Official links

CWE Mitre.org

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Name: Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

General Informations

Applicable Platforms

Language

Class: Not Language-Specific (Undetermined)

Common Consequences

Scope	Impact	Likelihood
Availability	DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Amplification Note: An infinite loop will cause unexpected consumption of resources, such as CPU cycles or memory. The software's operation may slow down, or cause a long time to respond.

Observed Examples

References	Description
CVE-2022-22224	Chain: an operating system does not properly process malformed Open Shortest Path First (OSPF) Type/Length/Value Identifiers (TLV) (CWE-703), which can cause the process to enter an infinite loop (CWE-835)
CVE-2022-25304	A Python machine communication platform did not account for receiving a malformed packet with a null size, causing the receiving function to never update the message buffer and be caught in an infinite loop.
CVE-2011-1027	Chain: off-by-one error (CWE-193) leads to infinite loop (CWE-835) using invalid hex-encoded characters.
CVE-2011-1142	Chain: self-referential values in recursive definitions lead to infinite loop.
CVE-2011-1002	NULL UDP packet is never cleared from a queue, leading to infinite loop.
CVE-2006-6499	Chain: web browser crashes due to infinite loop - "bad looping logic [that relies on] floating point math [CWE-1339] to exit the loop [CWE-835]"
CVE-2010-4476	Floating point conversion routine cycles back and forth between two different values.
CVE-2010-4645	Floating point conversion routine cycles back and forth between two different values.
CVE-2010-2534	Chain: improperly clearing a pointer in a linked list leads to infinite loop.
CVE-2013-1591	Chain: an integer overflow (CWE-190) in the image size calculation causes an infinite loop (CWE-835) which sequentially allocates buffers without limits (CWE-1325) until the stack is full.
CVE-2008-3688	Chain: A denial of service may be caused by an uninitialized variable (CWE-457) allowing an infinite loop (CWE-835) resulting from a connection to an unresponsive server.

Vulnerability Mapping Notes

Justification : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Comment : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

References

REF-62

The Art of Software Security Assessment
Mark Dowd, John McDonald, Justin Schuh.

REF-962

Automated Source Code Security Measure (ASCSM)
Object Management Group (OMG).
http://www.omg.org/spec/ASCSM/1.0/

Submission

Name	Organization	Date	Date release	Version
CWE Content Team	MITRE	2011-03-22 +00:00	2011-03-30 +00:00	1.12

Modifications

Name	Organization	Date	Comment
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences, Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2012-05-11 +00:00	updated Demonstrative_Examples, References, Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2017-11-08 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2019-01-03 +00:00	updated References, Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2019-06-20 +00:00	updated Relationships
CWE Content Team	MITRE	2020-02-24 +00:00	updated Relationships
CWE Content Team	MITRE	2020-08-20 +00:00	updated Relationships
CWE Content Team	MITRE	2020-12-10 +00:00	updated Observed_Examples, Relationships
CWE Content Team	MITRE	2021-03-15 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2021-07-20 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2023-01-31 +00:00	updated Description, Observed_Examples
CWE Content Team	MITRE	2023-04-27 +00:00	updated Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2023-10-26 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2024-02-29 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2024-11-19 +00:00	updated Description, Diagram