Falhas do tipo CWE-190

1.956 resultados

Estouro ou Envolvimento de Inteiro

Ocorre quando uma operação aritmética produz um valor que excede o limite máximo (ou mínimo) que o tipo de dado inteiro pode armazenar, causando o valor envolver-se para o lado oposto ou comportamento inesperado. Isso permite que atacantes contornem validações, aloquem memória inadequada, ou causem travamentos ao explorar essa descontinuidade.

Exemplo

Um servidor de upload limita arquivos a 2 GB verificando se size < 2147483648 (INT_MAX). Um atacante envia size=2147483648, que em inteiro de 32 bits assinado vira -2147483648. A validação passa, mas durante a alocação de buffer o sistema trata como valor negativo ou inesperado, causando falha ou bypass de proteção.

Como mitigar

Use tipos inteiros sem sinal (unsigned) ou de maior capacidade (64 bits) quando apropriado; valide entradas contra limites explícitos *antes* de operações aritméticas; utilize funções de verificação de overflow fornecidas pela linguagem ou biblioteca (ex: __builtin_add_overflow em C, SafeInt em .NET); evite conversões implícitas entre tipos.

CVE-2019-9133HIGHKMPlayer Subtitles parser Heap Overflow VulnerabilityEPSS 1.9%CVE-2018-11574CRITICALImproper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information diEPSS 1.9%CVE-2026-7838HIGHUltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason lengthEPSS 1.9%CVE-2018-1124HIGHprocps-ng before version 3.3.15 is vulnerable to multiple integer overflows leading to a heap corruption in file2strvec function. This allowEPSS 1.9%CVE-2021-27435HIGHARM mbed Integer Overflow or WraparoundEPSS 1.9%CVE-2021-3476—A flaw was found in OpenEXR's B44 uncompression functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted filEPSS 1.8%CVE-2021-3474—There's a flaw in OpenEXR in versions before 3.0.0-beta. A crafted input file that is processed by OpenEXR could cause a shift overflow in tEPSS 1.8%CVE-2021-3475—There is a flaw in OpenEXR in versions before 3.0.0-beta. An attacker who can submit a crafted file to be processed by OpenEXR could cause aEPSS 1.8%CVE-2025-21172HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-1580MEDIUMInteger overflow in VideoLAN dav1dEPSS 1.8%CVE-2026-8631CRITICALHP Linux Imaging and Printing Software – Potential Escalation of Privilege and Arbitrary Code ExecutionEPSS 1.8%CVE-2024-21372HIGHWindows OLE Remote Code Execution VulnerabilityEPSS 1.8%CVE-2021-43784MEDIUMOverflow in netlink bytemsg length field allows attacker to override netlink-based container configurationEPSS 1.8%CVE-2020-10063MEDIUMRemote Denial of Service in CoAP Option Parsing Due To Integer OverflowEPSS 1.8%CVE-2022-43974HIGHMatrixSSL 4.0.4 through 4.5.1 has an integer overflow in matrixSslDecodeTls13. A remote attacker might be able to send a crafted TLS MessageEPSS 1.8%CVE-2021-21704MEDIUMMultiple vulnerabilities in Firebird client extensionEPSS 1.8%CVE-2021-22156CRITICALAn integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software DevelopEPSS 1.8%CVE-2025-47987HIGHCredential Security Support Provider Protocol (CredSSP) Elevation of Privilege VulnerabilityEPSS 1.8%CVE-2024-21428HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%CVE-2022-24354HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC1750 prior to 1.1.4 BuEPSS 1.8%