Falhas do tipo CWE-190

1.657 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-2024-20654HIGHMicrosoft ODBC Driver Remote Code Execution VulnerabilityEPSS 2.0%CVE-2021-32027—A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before 9.6.22. While modifying certain SEPSS 2.0%CVE-2023-29369MEDIUMRemote Procedure Call Runtime Denial of Service VulnerabilityEPSS 2.0%CVE-2021-36058MEDIUMXMP Toolkit SDK Integer Overflow Vulnerability Could Result In Application Denial Of ServiceEPSS 2.0%CVE-2019-5089HIGHAn exploitable memory corruption vulnerability exists in Investintech Able2Extract Professional 4.0.7 x64. A specially crafted JPEG file canEPSS 2.0%CVE-2024-21444HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-21441HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.9%CVE-2023-0179—A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could allow the leakage of both stack aEPSS 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-2023-36401HIGHMicrosoft Remote Registry Service Remote Code Execution VulnerabilityEPSS 1.9%CVE-2021-20304—A flaw was found in OpenEXR's hufDecode functionality. This flaw allows an attacker who can pass a crafted file to be processed by OpenEXR, EPSS 1.9%CVE-2020-35523—An integer overflow flaw was found in libtiff that exists in the tif_getimage.c file. This flaw allows an attacker to inject and execute arbEPSS 1.9%CVE-2018-1126MEDIUMprocps-ng before version 3.3.15 is vulnerable to an incorrect integer size in proc/alloc.* leading to truncation/integer overflow issues. ThEPSS 1.9%CVE-2016-9583MEDIUMAn out-of-bounds heap read vulnerability was found in the jpc_pi_nextpcrl() function of jasper before 2.0.6 when processing crafted input.EPSS 1.9%CVE-2025-49683HIGHMicrosoft Virtual Hard Disk Remote Code Execution VulnerabilityEPSS 1.9%CVE-2026-32759MEDIUMFile Browser TUS Negative Upload-Length Fires Post-Upload Hooks PrematurelyEPSS 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-2023-35381HIGHWindows Fax Service Remote Code Execution VulnerabilityEPSS 1.9%CVE-2013-7353MEDIUMInteger overflow in the png_set_unknown_chunks function in libpng/pngset.c in libpng before 1.5.14beta08 allows context-dependent attackers EPSS 1.9%CVE-2019-9133HIGHKMPlayer Subtitles parser Heap Overflow VulnerabilityEPSS 1.9%