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-2013-2596HIGHInteger overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of AEPSS 3.2%KEVCVE-2021-3520—There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, EPSS 3.2%CVE-2023-45853HIGHMiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename,EPSS 3.2%CVE-2020-11904—The Treck TCP/IP stack before 6.0.1.66 has an Integer Overflow during Memory Allocation that causes an Out-of-Bounds Write.EPSS 3.2%CVE-2018-1084HIGHcorosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c.EPSS 3.1%CVE-2018-10911MEDIUMA flaw was found in the way dic_unserialize function of glusterfs does not handle negative key length values. An attacker could use this flaEPSS 3.1%CVE-2023-35383HIGHMicrosoft Message Queuing Information Disclosure VulnerabilityEPSS 3.0%CVE-2014-9192—Trihedral Engineering Limited VTScada Integer OverflowEPSS 2.9%CVE-2023-0754CRITICAL The affected products are vulnerable to an integer overflow or wraparound, which could  allow an attacker to crash the server and remotely EPSS 2.9%CVE-2020-10070CRITICALMQTT buffer overflow on receive bufferEPSS 2.9%CVE-2022-41318HIGHA buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB auEPSS 2.8%CVE-2022-22826HIGHnextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.EPSS 2.8%CVE-2022-22827HIGHstoreAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.EPSS 2.8%CVE-2021-21036HIGHAcrobat Reader DC Integer Overflow Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 2.8%CVE-2017-5130HIGHAn integer overflow in xmlmemory.c in libxml2 before 2.9.5, as used in Google Chrome prior to 62.0.3202.62 and other products, allowed a remEPSS 2.7%CVE-2021-32762HIGHInteger overflow that can lead to heap overflow in redis-cli, redis-sentinel on some platformsEPSS 2.7%CVE-2022-22825HIGHlookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.EPSS 2.6%CVE-2023-41056HIGHRedis vulnerable to integer overflow in certain payloadsEPSS 2.6%CVE-2019-5093HIGHAn exploitable code execution vulnerability exists in the DICOM network response functionality of LEADTOOLS libltdic.so version 20.0.2019.3.EPSS 2.5%CVE-2023-36910CRITICALMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.5%