Fallos del tipo CWE-476

2572 resultados

Desreferência de ponteiro nulo autenticada remota

A aplicação tenta acessar um objeto ou endereço de memória que não foi inicializado ou foi definido como nulo, sem verificar essa condição antes. Um atacante autenticado consegue provocar esse acesso inválido enviando dados malformados ou inesperados, causando crash ou comportamento indefinido.

Ejemplo

Um endpoint autenticado de API recebe um ID de usuário, faz uma busca no banco que retorna nulo (usuário não existe) e tenta acessar diretamente campos desse objeto nulo sem validação — resultando em erro 500 ou travamento da aplicação.

Cómo mitigar

Sempre verificar se um objeto é nulo antes de usá-lo; usar análise estática (linters, SAST) para detectar acessos potenciais a nulos; validar e tratar casos onde dados esperados podem estar ausentes, mesmo que o usuário esteja autenticado.

CVE-2023-26917HIGHlibyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lysp_stmt_validate_value at lys_parseEPSS 0.9%CVE-2022-34761HIGHA CWE-476: NULL Pointer Dereference vulnerability exists that could cause a denial of service of the webserver when parsing JSON content typEPSS 0.9%CVE-2022-42928HIGHCertain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corrEPSS 0.9%CVE-2022-3116HIGHThe Heimdal Software Kerberos 5 implementation is vulnerable to a null pointer dereferance. An attacker with network access to an applicatioEPSS 0.9%CVE-2022-23525MEDIUMHelm vulnerable to Denial of service via NULL Pointer DereferenceEPSS 0.9%CVE-2022-23526MEDIUMHelm contains Denial of service through schema fileEPSS 0.9%CVE-2022-1507MEDIUMchafa: NULL Pointer Dereference in function gif_internal_decode_frame at libnsgif.c:599 allows attackers to cause a denial of service (crash) via a crafted input file. in hpjansson/chafaEPSS 0.9%CVE-2021-4188MEDIUMNULL Pointer Dereference in mruby/mrubyEPSS 0.9%CVE-2023-49275MEDIUMWazuh vulnerable to NULL Pointer Dereference in wazuh-analysisdEPSS 0.9%CVE-2019-10207MEDIUMA flaw was found in the Linux kernel's Bluetooth implementation of UART, all versions kernel 3.x.x before 4.18.0 and kernel 5.x.x. An attackEPSS 0.9%CVE-2020-10602—In OSIsoft PI System multiple products and versions, an authenticated remote attacker could crash PI Network Manager due to a race conditionEPSS 0.9%CVE-2021-3319MEDIUMDOS: Incorrect 802154 Frame Validation for Omitted Source / Dest AddressesEPSS 0.9%CVE-2024-10750HIGHTenda i22 SysToo websReadEvent null pointer dereferenceEPSS 0.9%CVE-2024-38536HIGHSuricata http/range: NULL-ptr deref when http.memcap is reachedEPSS 0.9%CVE-2026-8619HIGHUnauthenticated Denial-of-Service Vulnerability in HTTP Service in TP-Link TL-MR100, TL-MR150, TL-MR6400 and Archer MR600EPSS 0.9%CVE-2024-26342HIGHA Null pointer dereference in usr/sbin/httpd in ASUS AC68U 3.0.0.4.384.82230 allows remote attackers to trigger DoS via network packet.EPSS 0.9%CVE-2024-47601MEDIUMGHSL-2024-249: GStreamer has a NULL-pointer dereference in Matroska/WebM demuxerEPSS 0.9%CVE-2024-47603MEDIUMGHSL-2024-251: GStreamer NULL-pointer dereference in Matroska/WebM demuxerEPSS 0.9%CVE-2026-52929HIGHsctp: stream: fully roll back denied add-stream stateEPSS 0.9%CVE-2024-47599MEDIUMGHSL-2024-247: GStreamer Insufficient error handling in JPEG decoder that can lead to NULL-pointer dereferencesEPSS 0.9%