CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0CVE-2019-25014 – istio-pilot: requests to debug api can result in panic
https://notcve.org/view.php?id=CVE-2019-25014
A NULL pointer dereference was found in pkg/proxy/envoy/v2/debug.go getResourceVersion in Istio pilot before 1.5.0-alpha.0. If a particular HTTP GET request is made to the pilot API endpoint, it is possible to cause the Go runtime to panic (resulting in a denial of service to the istio-pilot application). Se encontró una desreferencia del puntero NULL en el archivo pkg/proxy/envoy/v2/debug.go en la función getResourceVersion en Istio pilot versiones anteriores a 1.5.0-alpha.0. Si es realizado una petición HTTP GET en particular al endpoint de la API pilot, es posible que el tiempo de ejecución de Go entre en pánico (resultando en una denegación de servicio para la aplicación istio-pilot) An out-of-bounds read flaw was found in istio-pilot. This flaw allows an attacker to send a crafted HTTP GET request to the pilot debug API endpoint. • https://bugzilla.redhat.com/show_bug.cgi?id=1919066 https://github.com/istio/istio/compare/1.4.2...1.5.0-alpha.0 https://access.redhat.com/security/cve/CVE-2019-25014 • CWE-125: Out-of-bounds Read CWE-476: NULL Pointer Dereference •
CVSS: 6.8EPSS: 0%CPEs: 2EXPL: 1CVE-2020-16844 – istio: incorrect translation of DENY policy for TCP service
https://notcve.org/view.php?id=CVE-2020-16844
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy. En Istio versiones 1.5.0 hasta 1.5.8 e Istio versiones 1.6.0 hasta 1.6.7, cuando los usuarios especifican un recurso AuthorizationPolicy con acciones DENY usando sufijos de comodín (por ejemplo, *-some-suffix) para los campos source principals o namespace, a los que llaman nunca se le denegará el acceso, omitiendo la política prevista An insecure access control vulnerability was found in Istio. If an authorization policy is created for a TCP service that includes a DENY rule with a prefix wildcard, Istio translates this into an Envoy string match, incorrectly removing the wildcard. This flaw allows an attacker to subvert particular DENY rules, potentially gaining access to restricted resources. • https://github.com/istio/istio/releases https://istio.io/latest/news/security/istio-security-2020-009 https://access.redhat.com/security/cve/CVE-2020-16844 https://bugzilla.redhat.com/show_bug.cgi?id=1861625 • CWE-284: Improper Access Control •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2020-10739 – istio/envoy: crafted packet allows remote attacker to cause denial of service
https://notcve.org/view.php?id=CVE-2020-10739
Istio 1.4.x before 1.4.9 and Istio 1.5.x before 1.5.4 contain the following vulnerability when telemetry v2 is enabled: by sending a specially crafted packet, an attacker could trigger a Null Pointer Exception resulting in a Denial of Service. This could be sent to the ingress gateway or a sidecar, triggering a null pointer exception which results in a denial of service. This also affects servicemesh-proxy where a null pointer exception flaw was found in servicemesh-proxy. When running Telemetry v2 (not on by default in version 1.4.x), an attacker could send a specially crafted packet to the ingress gateway or proxy sidecar, triggering a denial of service. Istio versiones 1.4.x anteriores a 1.4.9 e Istio versiones 1.5.x anteriores a 1.5.4, contienen la siguiente vulnerabilidad cuando se habilita la telemetry v2: al enviar un paquete especialmente diseñado, un atacante podría desencadenar una Excepción de Puntero Null resultando en una Denegación de Servicio. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10739 https://github.com/istio/envoy/commit/8788a3cf255b647fd14e6b5e2585abaaedb28153#diff-fcf2cf5dd389b5285f882ba4a8708633 https://istio.io/news/security/istio-security-2020-005 https://access.redhat.com/security/cve/CVE-2020-10739 https://bugzilla.redhat.com/show_bug.cgi?id=1833184 • CWE-476: NULL Pointer Dereference •
CVSS: 3.1EPSS: 0%CPEs: 2EXPL: 1CVE-2020-11767
https://notcve.org/view.php?id=CVE-2020-11767
Istio through 1.5.1 and Envoy through 1.14.1 have a data-leak issue. If there is a TCP connection (negotiated with SNI over HTTPS) to *.example.com, a request for a domain concurrently configured explicitly (e.g., abc.example.com) is sent to the server(s) listening behind *.example.com. The outcome should instead be 421 Misdirected Request. Imagine a shared caching forward proxy re-using an HTTP/2 connection for a large subnet with many users. If a victim is interacting with abc.example.com, and a server (for abc.example.com) recycles the TCP connection to the forward proxy, the victim's browser may suddenly start sending sensitive data to a *.example.com server. • https://bugs.chromium.org/p/chromium/issues/detail?id=954160#c5 https://github.com/envoyproxy/envoy/issues/6767 https://github.com/istio/istio/issues/13589 https://github.com/istio/istio/issues/9429 •
CVSS: 7.4EPSS: 0%CPEs: 1EXPL: 0CVE-2020-8843
https://notcve.org/view.php?id=CVE-2020-8843
An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4. • https://github.com/istio/istio/commits/master https://istio.io/news/security https://istio.io/news/security/istio-security-2020-002 • CWE-20: Improper Input Validation •