Falhas do tipo CWE-190

1.660 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-2020-27754—In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller whEPSS 1.1%CVE-2020-27758—A flaw was found in ImageMagick in coders/txt.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefEPSS 1.1%CVE-2020-27767—A flaw was found in ImageMagick in MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could triggEPSS 1.1%CVE-2020-27772—A flaw was found in ImageMagick in coders/bmp.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefEPSS 1.1%CVE-2020-27774—A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could triEPSS 1.1%CVE-2020-27775—A flaw was found in ImageMagick in MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could triggEPSS 1.1%CVE-2021-32714MEDIUMInteger Overflow in Chunked Transfer-EncodingEPSS 1.1%CVE-2026-28214MEDIUMFirebird server hangs when using specific clumplet on batch creationEPSS 1.1%CVE-2024-45491HIGHAn issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (wEPSS 1.1%CVE-2023-28831HIGHThe OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application EPSS 1.1%CVE-2020-27751—A flaw was found in ImageMagick in MagickCore/quantum-export.c. An attacker who submits a crafted file that is processed by ImageMagick coulEPSS 1.1%CVE-2024-22396MEDIUMAn Integer-based buffer overflow vulnerability in the SonicOS via IPSec allows a remote attacker in specific conditions to cause Denial of SEPSS 1.1%CVE-2024-23775HIGHInteger Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mEPSS 1.1%CVE-2022-24667—A program using swift-nio-http2 is vulnerable to a denial of service attack, caused by a network peer sending a specially crafted HPACK-encoEPSS 1.1%CVE-2026-48095HIGHGHSL-2026-140_7-Zip: 7-Zip has a heap buffer overflow via NTFS compressed stream buffer under-allocationEPSS 1.1%CVE-2024-27304CRITICALpgx SQL Injection via Protocol Message Size OverflowEPSS 1.1%CVE-2024-46483CRITICALXlight FTP Server <3.9.4.3 has an integer overflow vulnerability in the packet parsing logic of the SFTP server, which can lead to a heap ovEPSS 1.1%CVE-2022-23567MEDIUMInteger overflows in TensorflowEPSS 1.1%CVE-2021-22684—Tizen RT RTOS version 3.0.GBB is vulnerable to integer wrap-around in functions_calloc and mm_zalloc. This improper memory assignment can leEPSS 1.1%CVE-2020-27762—A flaw was found in ImageMagick in coders/hdr.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefEPSS 1.1%