CVSS: 8.3EPSS: 7%CPEs: 4EXPL: 0CVE-2021-29492 – Bypass of path matching rules using escaped slash characters
https://notcve.org/view.php?id=CVE-2021-29492
12 May 2021 — Envoy is a cloud-native edge/middle/service proxy. Envoy does not decode escaped slash sequences `%2F` and `%5C` in HTTP URL paths in versions 1.18.2 and before. A remote attacker may craft a path with escaped slashes, e.g. `/something%2F..%2Fadmin`, to bypass access control, e.g. a block on `/admin`. A backend server could then decode slash sequences and normalize path and provide an attacker access beyond the scope provided for by the access control policy. ### Impact Escalation of Privileges when using R... • https://github.com/envoyproxy/envoy/security/advisories/GHSA-4987-27fx-x6cf • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-863: Incorrect Authorization •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1CVE-2021-28682 – envoyproxy/envoy: integer overflow handling large grpc-timeouts
https://notcve.org/view.php?id=CVE-2021-28682
22 Apr 2021 — An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large grpc-timeout value leads to unexpected timeout calculations. Se detectó un problema en Envoy versiones hasta 1.71.1. presenta un desbordamiento de enteros explotable remoto en el que un valor de grpc-timeout muy grande conlleva a cálculos de tiempo de espera inesperados A flaw was found in envoyproxy/envoy. An attacker, able to craft a packet which specifies a large grpc-timeout, can ... • https://blog.envoyproxy.io • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-29258 – envoyproxy/envoy: crash with empty HTTP/2 metadata map
https://notcve.org/view.php?id=CVE-2021-29258
22 Apr 2021 — An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion. Se detectó un problema en Envoy versión 1.14.0. Se presenta un bloqueo explotable remoto para unos metadatos HTTP2, porque un mapa de METADATOS vacío desencadena un Reachable Assertion A flaw was found in envoyproxy. An attacker, able to craft an HTTP2 request that specifies an empty metadata map, can crash envoy resulting in a denial of servic... • https://blog.envoyproxy.io • CWE-476: NULL Pointer Dereference CWE-617: Reachable Assertion •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-35470
https://notcve.org/view.php?id=CVE-2020-35470
15 Dec 2020 — Envoy before 1.16.1 logs an incorrect downstream address because it considers only the directly connected peer, not the information in the proxy protocol header. This affects situations with tcp-proxy as the network filter (not HTTP filters). Envoy versiones anteriores a 1.16.1, registra una dirección posterior incorrecta porque considera solo al peer conectado directamente, no la información en el encabezado proxy protocol. Esto afecta situaciones con tcp-proxy como filtro de red (no filtros HTTP) • https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1 •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2020-35471
https://notcve.org/view.php?id=CVE-2020-35471
15 Dec 2020 — Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500. Envoy versiones anteriores a 1.16.1, maneja inapropiadamente datagramas perdidos y truncados, como es demostrado por un fallo de segmentación para un tamaño de paquete UDP más largo que 1500 • https://github.com/envoyproxy/envoy/compare/v1.16.0...v1.16.1 •
CVSS: 8.3EPSS: 0%CPEs: 4EXPL: 1CVE-2020-25017 – envoyproxy/envoy: incorrectly handles multiple HTTP headers in requests
https://notcve.org/view.php?id=CVE-2020-25017
30 Sep 2020 — Envoy through 1.15.0 only considers the first value when multiple header values are present for some HTTP headers. Envoy’s setCopy() header map API does not replace all existing occurences of a non-inline header. Envoy versiones hasta 1.15.0, solo considera el primer valor cuando múltiples valores de encabezado están presentes para algunos encabezados HTTP. La API de mapa de encabezado de la función setCopy() de Envoy no reemplaza todas las ocurrencias existentes de un encabezado no en línea An incorre... • https://github.com/envoyproxy/envoy/security/advisories/GHSA-2v25-cjjq-5f4w • CWE-284: Improper Access Control •