Fallos del tipo CWE-476

2331 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-2024-47602MEDIUMGHSL-2024-250: Streamer NULL-pointer dereferences and out-of-bounds reads in Matroska/WebM demuxerEPSS 0.9%CVE-2026-60109HIGHZeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR ParsingEPSS 0.9%CVE-2024-36896CRITICALUSB: core: Fix access violation during port device removalEPSS 0.9%CVE-2022-28070HIGHA null pointer deference in __core_anal_fcn function in radare2 5.4.2 and 5.4.0.EPSS 0.9%CVE-2023-45924CRITICALlibglxproto.c in OpenGL libglvnd bb06db5a was discovered to contain a segmentation violation via the function glXGetDrawableScreen(). NOTE: EPSS 0.9%CVE-2022-23017—On BIG-IP version 16.x before 16.1.0, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.5, and all versions of 13.1.x, when a virtual server is cEPSS 0.9%CVE-2022-23021—On BIG-IP version 16.1.x before 16.1.2, when any of the following configurations are configured on a virtual server, undisclosed requests caEPSS 0.9%CVE-2022-23016—On versions 16.1.x before 16.1.2 and 15.1.x before 15.1.4.1, when BIG-IP SSL Forward Proxy with TLS 1.3 is configured on a virtual server, uEPSS 0.9%CVE-2022-23022—On BIG-IP version 16.1.x before 16.1.2, when an HTTP profile is configured on a virtual server, undisclosed requests can cause the Traffic MEPSS 0.9%CVE-2022-0481MEDIUMNULL Pointer Dereference in mruby/mrubyEPSS 0.9%CVE-2022-29491HIGHOn F5 BIG-IP LTM, Advanced WAF, ASM, or APM 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5, 14.1.x versions prior to 14.EPSS 0.9%CVE-2024-3385HIGHPAN-OS: Firewall Denial of Service (DoS) when GTP Security is DisabledEPSS 0.9%CVE-2022-23025—On BIG-IP version 16.1.x before 16.1.1, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, when a SIP ALG profile is EPSS 0.9%CVE-2023-3603LOWProcessing sftp server read may cause null dereferenceEPSS 0.9%CVE-2026-42903MEDIUMWindows Kerberos Denial of Service VulnerabilityEPSS 0.9%CVE-2020-15204MEDIUMSegfault in TensorflowEPSS 0.9%CVE-2024-47613HIGHGHSL-2024-118: GStreamer has a null pointer dereference in gst_gdk_pixbuf_dec_flushEPSS 0.9%CVE-2020-15191MEDIUMUndefined behavior in TensorflowEPSS 0.9%CVE-2025-69421HIGHNULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex functionEPSS 0.9%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%