CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 2CVE-2019-18836
https://notcve.org/view.php?id=CVE-2019-18836
11 Nov 2019 — Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used." Envoy versión 1.12.0 permite una denegación de servicio remota debido a bucles de recursos, como es demostrado por una conexión TCP inactiva que es capaz de mantener un subproceso o hilo de trabajo en un bucle ocupado infinito cuando la función continue_on_listener_filters_time... • https://blog.envoyproxy.io • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.8EPSS: 13%CPEs: 16EXPL: 0CVE-2019-15226
https://notcve.org/view.php?id=CVE-2019-15226
09 Oct 2019 — Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-serv... • https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2019-15225
https://notcve.org/view.php?id=CVE-2019-15225
19 Aug 2019 — In Envoy through 1.11.1, users may configure a route to match incoming path headers via the libstdc++ regular expression implementation. A remote attacker may send a request with a very long URI to result in a denial of service (memory consumption). This is a related issue to CVE-2019-14993. En Envoy versiones hasta 1.11.1, los usuarios pueden configurar una ruta (path) para que coincida con los encabezados de ruta (path) entrantes por medio de la implementación de expresiones regulares libstdc++. Un atacan... • https://github.com/envoyproxy/envoy/issues/7728 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 10.0EPSS: 0%CPEs: 1EXPL: 0CVE-2019-9901 – istio/envoy: Path traversal via URL Patch manipulation in HTTP/1.x header
https://notcve.org/view.php?id=CVE-2019-9901
11 Apr 2019 — Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy. Envoy versión 1.9.0 y anteriores no normalizan las path URL HTTP. • https://github.com/envoyproxy/envoy/issues/6435 • CWE-20: Improper Input Validation CWE-706: Use of Incorrectly-Resolved Name or Reference •
CVSS: 8.3EPSS: 0%CPEs: 2EXPL: 2CVE-2019-9900 – istio/envoy: Authorization bypass via null characters injection in HTTP/1.x
https://notcve.org/view.php?id=CVE-2019-9900
11 Apr 2019 — When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources. Al analizar los valores de encabezado HTTP/1.x, Envoy versión 1.9.0 y anteriores, no rechazan los caracteres de cero incrustados (NUL, ASCII 0x0). Esto permite que los atacantes remotos que crean valores de encabezado q... • https://access.redhat.com/errata/RHSA-2019:0741 • CWE-20: Improper Input Validation CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') •