Tên: Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Thông tin chung

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)
Tên: C (Sometimes)
Tên: Java (Undetermined)
Tên: Python (Undetermined)
Tên: Rust (Undetermined)

Công nghệ

Lớp: Not Technology-Specific (Undetermined)

Hậu quả phổ biến

Phạm vi	Tác động	Khả năng xảy ra
Availability	DoS: Crash, Exit, or Restart Ghi chú: While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, an attacker can still cause a denial of service if they can trigger an assert statement, and if the scope of the assert() extends beyond the attacker's own session. For example, if a server handles multiple simultaneous connections, if an assert() occurs in one single connection that causes all other connections to be dropped, this could be a significant denial of service.

Ví dụ đã quan sát

Tài liệu tham khảo	Mô tả
CVE-2024-8768	API server for LLM library can crash when provided an empty prompt, which triggers a reachable assertion
CVE-2023-49286	Chain: function in web caching proxy does not correctly check a return value (CWE-253) leading to a reachable assertion (CWE-617)
CVE-2006-6767	FTP server allows remote attackers to cause a denial of service (daemon abort) via crafted commands which trigger an assertion failure.
CVE-2006-6811	Chat client allows remote attackers to cause a denial of service (crash) via a long message string when connecting to a server, which causes an assertion failure.
CVE-2006-5779	Product allows remote attackers to cause a denial of service (daemon crash) via LDAP BIND requests with long authcid names, which triggers an assertion failure.
CVE-2006-4095	Product allows remote attackers to cause a denial of service (crash) via certain queries, which cause an assertion failure.
CVE-2006-4574	Chain: security monitoring product has an off-by-one error that leads to unexpected length values, triggering an assertion.
CVE-2004-0270	Anti-virus product has an assertion error when the line length is non-numeric.

Các biện pháp giảm thiểu tiềm năng

Phases : Implementation
If the assertion statement is required (e.g., for security or reliability), change the invoking code to avoid the conditions that trigger the assertion.
Phases : Implementation
Consider changing the assertion to some other less "fatal" error. This might not be easy to implement, since other code may be needed to handle the error.
Phases : Implementation
Make sensitive open/close operations non-reachable from directly user-controlled data (e.g. open/close resources)
Phases : Implementation
Perform input validation on user data.

Phương pháp phát hiện

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Hiệu quả : High

Ghi chú ánh xạ lỗ hổng

Lý do : 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.
Bình luận : 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.

Tài liệu tham khảo

REF-1541

Secure Coding Guide for Python
OpenSSF.
https://best.openssf.org/Secure-Coding-Guide-for-Python/

Gửi

Tên	Tổ chức	Ngày	Ngày phát hành	Version
CWE Content Team	MITRE	2007-05-07 +00:00	2007-05-07 +00:00	Draft 6

Sửa đổi

Tên	Tổ chức	Ngày	Bình luận
Sean Eidemiller	Cigital	2008-07-01 +00:00	added/updated demonstrative examples
Eric Dalci	Cigital	2008-07-01 +00:00	updated Potential_Mitigations, Time_of_Introduction
CWE Content Team	MITRE	2008-09-08 +00:00	updated Description, Relationships, Observed_Example, Other_Notes, Weakness_Ordinalities
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences
CWE Content Team	MITRE	2012-05-11 +00:00	updated Common_Consequences, Observed_Examples, Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2012-10-30 +00:00	updated Potential_Mitigations
CWE Content Team	MITRE	2014-06-23 +00:00	updated Common_Consequences, Description, Other_Notes
CWE Content Team	MITRE	2014-07-30 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2017-01-19 +00:00	updated Relationships
CWE Content Team	MITRE	2017-11-08 +00:00	updated Relationships
CWE Content Team	MITRE	2019-01-03 +00:00	updated Relationships, Taxonomy_Mappings
CWE Content Team	MITRE	2019-06-20 +00:00	updated Relationships, Type
CWE Content Team	MITRE	2019-09-19 +00:00	updated Alternate_Terms
CWE Content Team	MITRE	2023-04-27 +00:00	updated Detection_Factors, Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2023-10-26 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2024-02-29 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2025-12-11 +00:00	updated Applicable_Platforms, Observed_Examples, Relationships
CWE Content Team	MITRE	2026-10-28 +00:00	updated Applicable_Platforms, Common_Consequences, Description, Observed_Examples, Potential_Mitigations, References, Relationships, Taxonomy_Mappings

Chi tiết CWE-617

CWE-617