Nama: Incorrect Comparison Logic Granularity

The product's comparison logic is performed over a series of steps rather than across the entire string in one operation. If there is a comparison logic failure on one of these steps, the operation may be vulnerable to a timing attack that can result in the interception of the process for nefarious purposes.

Informasi Umum

Mode Pengenalan

Architecture and Design
Implementation

Platform yang Berlaku

Bahasa

Kelas: Not Language-Specific (Undetermined)

Sistem Operasi

Kelas: Not OS-Specific (Undetermined)

Arsitektur

Kelas: Not Architecture-Specific (Undetermined)

Teknologi

Kelas: Not Technology-Specific (Undetermined)

Konsekuensi Umum

Cakupan	Dampak	Kemungkinan
Confidentiality Authorization	Bypass Protection Mechanism

Contoh yang Diamati

Referensi	Deskripsi
CVE-2019-10482	Smartphone OS uses comparison functions that are not in constant time, allowing side channels
CVE-2019-10071	Java-oriented framework compares HMAC signatures using String.equals() instead of a constant-time algorithm, causing timing discrepancies
CVE-2014-0984	Password-checking function in router terminates validation of a password entry when it encounters the first incorrect character, which allows remote attackers to obtain passwords via a brute-force attack that relies on timing differences in responses to incorrect password guesses, aka a timing side-channel attack.

Mitigasi yang Memungkinkan

Phases : Implementation

Catatan Pemetaan Kerentanan

Justifikasi : 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.
Komentar : 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.

Pola Serangan Terkait

CAPEC ID	Nama Pola Serangan
CAPEC-26	Leveraging Race Conditions The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.

Catatan

CWE 4.16 removed a demonstrative example for a hardware module because it was inaccurate and unable to be adapted. The CWE team is developing an alternative.

Referensi

REF-1079

SCA4n00bz - Timing-based Sidechannel Attacks for Hardware N00bz workshop
Joe Fitzpatrick.
https://github.com/securelyfitz/SCA4n00bz

Pengajuan

Nama	Organisasi	Tanggal	Tanggal rilis	Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi	Intel Corporation	2020-02-12 +00:00	2020-02-24 +00:00	4.1

Modifikasi

Nama	Organisasi	Tanggal	Komentar
CWE Content Team	MITRE	2020-08-20 +00:00	updated Relationships
CWE Content Team	MITRE	2021-07-20 +00:00	updated Related_Attack_Patterns
CWE Content Team	MITRE	2022-10-13 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2023-04-27 +00:00	updated Observed_Examples, 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, Observed_Examples
CWE Content Team	MITRE	2024-11-19 +00:00	updated Demonstrative_Examples, Maintenance_Notes
CWE Content Team	MITRE	2025-12-11 +00:00	updated Weakness_Ordinalities

Detail CWE-1254

CWE-1254