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-2022-28070HIGHA null pointer deference in __core_anal_fcn function in radare2 5.4.2 and 5.4.0.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-2022-23016—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-2023-45924CRITICALlibglxproto.c in OpenGL libglvnd bb06db5a was discovered to contain a segmentation violation via the function glXGetDrawableScreen(). NOTE: EPSS 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-2026-28388HIGHNULL Pointer Dereference When Processing a Delta CRLEPSS 0.9%CVE-2022-0481MEDIUMNULL Pointer Dereference in mruby/mrubyEPSS 0.9%CVE-2026-26829HIGHA NULL pointer dereference in the safe_atou64 function (src/misc.c) of owntone-server through commit c4d57aa allows attackers to cause a DenEPSS 0.9%CVE-2024-53580HIGHiperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function.EPSS 0.9%CVE-2023-42786MEDIUMA null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versioEPSS 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-2020-15204MEDIUMSegfault in TensorflowEPSS 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-2024-47613HIGHGHSL-2024-118: GStreamer has a null pointer dereference in gst_gdk_pixbuf_dec_flushEPSS 0.9%CVE-2026-48438HIGHCAI Content Credentials | NULL Pointer Dereference (CWE-476)EPSS 0.9%CVE-2022-42527HIGHIn cd_SsParseMsg of cd_SsCodec.c, there is a possible crash due to a missing null check. This could lead to remote denial of service with noEPSS 0.9%CVE-2024-3385HIGHPAN-OS: Firewall Denial of Service (DoS) when GTP Security is DisabledEPSS 0.9%CVE-2020-15191MEDIUMUndefined behavior in TensorflowEPSS 0.9%