Alertas de Seguridad de la Información

Una complejidad algorítmica ineficiente en la verificación de firmas DKIM y ARC en Progressive Robot hMailServer 6.0.0 a 6.3.5 permite a atacantes remotos no autenticados saturar servidores de correo mediante mensajes especialmente crafted. El procesamiento de encabezados crece exponencialmente, causando consumo excesivo de recursos y caída del servicio de correo, impactando directamente la comunicación empresarial en organizaciones que dependen de este servidor.

Vault and Vault Enterprise did not consistently evaluate ACL policies against the canonical form of resource and policy names. This may allow an authenticated user with delegated permissions to bypass an explicit deny restriction and access a protected resource or assign a denied policy, potentially leading to privilege escalation. This vulnerability (CVE-2026-89322) is fixed in Vault Community Ed…

The block sync download path in Zebra (zebrad) before 6.3.0 reads a block's height from its unvalidated coinbase scriptSig and drops blocks that appear too far behind the tip before consensus validation, without penalizing the supplying peer. Because V5 transaction IDs exclude the scriptSig, a malicious peer can repeatedly serve a canonical block whose coinbase claims height 1 while keeping the re…

Incorrect authorization in the custom storage volume creation endpoint in Canonical LXD versions 5.0.0 and later (fixed in 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client with permission to create custom volumes in a project to copy, and so read, any custom storage volume from any other project on the server, including its snapshots and configuration. The client does this with a c…

Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client that can create instances or custom storage volumes in a project, or a malicious migration source server, to write attacker-controlled files to arbitrary paths on the target host as root, leading to full host compromise. T…

Path traversal in the btrfs storage driver in Canonical LXD versions 4.0.2 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client with permission to create instances in a project to delete arbitrary files on the host as root. On hosts whose root filesystem is btrfs, the client can also place attacker-controlled content at arbitrary host paths, leading to full …

Path traversal in the Btrfs storage driver (unpackVolume) in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes[].path entry in backup/optimized_header.yaml during a btrfs optimized backup import.

MinIO through 7aac2a2 does not verify that every x-amz-* header present on a request also appears in the client-supplied X-Amz-SignedHeaders list. extractSignedHeaders() in cmd/signature-v4-utils.go iterates only the claimed list and never enumerates the headers that actually arrived, and thus a header that arrives unsigned is neither hashed into the canonical request nor rejected. Because cmd/api…

WeGIA is a web manager for charitable institutions. Prior to 3.8.5, the contribution request dispatcher in web/html/contribuicao/controller/control.php accepts attacker-controlled nomeClasse and metodo values without a complete controller and method allowlist, exempts sensitive ContribuicaoLogController operations from authentication, and constructs a controller include path without canonical dire…

vm2 through 3.11.6 does not normalize `node:`-prefixed builtin specifiers when evaluating user-supplied negative (deny) entries in a NodeVM wildcard require policy. Although NodeVM strips the `node:` prefix during require() resolution, negative wildcard entries are matched by exact string comparison against the canonical builtin names, so a policy such as `new NodeVM({ require: { builtin: ['*', '-…

NLnet Labs Unbound versiones hasta 1.26.0 es vulnerable a desbordamiento de búfer en memoria durante el procesamiento de respuestas TCP con nombres de consulta de 255 caracteres. Un atacante controlando un servidor DNS malicioso puede explotar esta falla para ejecutar código arbitrario o causar negación de servicio en recursores DNS de empresas. El impacto es alta en infraestructuras de LATAM que dependen de Unbound para resolución DNS.

libks, biblioteca fundamental para productos SignalWire C, contiene un defecto en la función `clean_uri()` del analizador HTTP que permite eludir la validación de rutas. Versiones anteriores a 2.0.11 no rechazarán URIs con segmentos de ruta excesivos, dejando secuencias ".." intactas y facilitando ataques de traversal de directorios. Esto afecta a cualquier aplicación que integre libks y procese solicitudes HTTP, comprometiendo el acceso a archivos sensibles en servidores de telecomunicaciones y plataformas de comunicaciones unificadas.

ION-DTN before 4.2.1-a.1 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash the ION process by sending a BPv7 bundle with a zero-length payload. The canonicalizePayloadBlock() function in bpsec_util.c passes bundle->payload.length to zco_clone() without validating it against zero, causing a failed CHKZERO assertion that triggers sm_Abort() and terminat…