CVSS: 8.2EPSS: 0%CPEs: 4EXPL: 0CVE-2024-23326 – Envoy incorrectly accepts HTTP 200 response for entering upgrade mode
https://notcve.org/view.php?id=CVE-2024-23326
Envoy is a cloud-native, open source edge and service proxy. A theoretical request smuggling vulnerability exists through Envoy if a server can be tricked into adding an upgrade header into a response. Per RFC https://www.rfc-editor.org/rfc/rfc7230#section-6.7 a server sends 101 when switching protocols. Envoy incorrectly accepts a 200 response from a server when requesting a protocol upgrade, but 200 does not indicate protocol switch. This opens up the possibility of request smuggling through Envoy if the server can be tricked into adding the upgrade header to the response. • https://github.com/envoyproxy/envoy/security/advisories/GHSA-vcf8-7238-v74c • CWE-391: Unchecked Error Condition CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-32475 – Envoy RELEASE_ASSERT using auto_sni with :authority header > 255 bytes
https://notcve.org/view.php?id=CVE-2024-32475
Envoy is a cloud-native, open source edge and service proxy. When an upstream TLS cluster is used with `auto_sni` enabled, a request containing a `host`/`:authority` header longer than 255 characters triggers an abnormal termination of Envoy process. Envoy does not gracefully handle an error when setting SNI for outbound TLS connection. The error can occur when Envoy attempts to use the `host`/`:authority` header value longer than 255 characters as SNI for outbound TLS connection. SNI length is limited to 255 characters per the standard. • https://github.com/envoyproxy/envoy/commit/b47fc6648d7c2dfe0093a601d44cb704b7bad382 https://github.com/envoyproxy/envoy/security/advisories/GHSA-3mh5-6q8v-25wj • CWE-253: Incorrect Check of Function Return Value CWE-617: Reachable Assertion •
CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2023-35945 – Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec
https://notcve.org/view.php?id=CVE-2023-35945
Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. • https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346 https://access.redhat.com/security/cve/CVE-2023-35945 https://bugzilla.redhat.com/show_bug.cgi?id=2217983 • CWE-400: Uncontrolled Resource Consumption CWE-459: Incomplete Cleanup •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1CVE-2023-27496 – Envoy may crash when a redirect url without a state param is received in the oauth filter
https://notcve.org/view.php?id=CVE-2023-27496
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script). • https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5 https://access.redhat.com/security/cve/CVE-2023-27496 https://bugzilla.redhat.com/show_bug.cgi?id=2182155 • CWE-20: Improper Input Validation •
CVSS: 9.1EPSS: 0%CPEs: 4EXPL: 1CVE-2023-27493 – Envoy doesn't escape HTTP header values
https://notcve.org/view.php?id=CVE-2023-27493
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy does not sanitize or escape request properties when generating request headers. This can lead to characters that are illegal in header values to be sent to the upstream service. In the worst case, it can cause upstream service to interpret the original request as two pipelined requests, possibly bypassing the intent of Envoy’s security policy. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. • https://github.com/envoyproxy/envoy/security/advisories/GHSA-w5w5-487h-qv8q https://access.redhat.com/security/cve/CVE-2023-27493 https://bugzilla.redhat.com/show_bug.cgi?id=2182158 • CWE-20: Improper Input Validation CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •