Withdrawn by the publisher.

Affected: CleanStart: cert-manager-webhook-pdns-fips

Package cert-manager-webhook-pdns-fips version 2.3.0-r0 fixes 17 vulnerabilities: CVE-2022-1996, CVE-2023-45142, CVE-2023-25151, CVE-2022-21698, CVE-2022-30636...

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it. HTTP header User-Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library internally uses `httpconv.ServerRequest` that records every value for HTTP `method` and `User-Agent`. In order to be affected, a program has to use the `otelhttp.NewHandler` wrapper and not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc. Version 0.44.0 fixed this issue when the values collected for attribute `http.request.method` were changed to be restricted to a set of well-known values and other high cardinality attributes were removed. As a workaround to stop being affected, `otelhttp.WithFilter()` can be used, but it requires manual careful configuration to not log certain requests entirely. For convenience and safe usage of this library, it should by default mark with the label `unknown` non-standard HTTP methods and User agents to show that such requests were made but do not increase cardinality. In case someone wants to stay with the current behavior, library API should allow to enable it.

Affected: Go: go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp, Go: go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful, Go: go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin, Go: go.opentelemetry.io/contrib/instrumentation/github.com/gorilla/mux/otelmux, Go: go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho, Go: go.opentelemetry.io/contrib/instrumentation/gopkg.in/macaron.v1/otelmacaron, Go: go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace

### Summary

This handler wrapper https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5f7e6ad5a49b45df45f61a1deb29d7f1158032df/instrumentation/net/http/otelhttp/handler.go#L63-L65 out of the box adds labels

- `http.user_agent` - `http.method`

that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it.

### Details

HTTP header User-Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library internally uses [httpconv.ServerRequest](https://github.com/open-telemetry/opentelemetry-go/blob/v1.12.0/semconv/internal/v2/http.go#L159) that records every value for HTTP [method](https://github.com/open-telemetry/opentelemetry-go/blob/38e1b499c3da3107694ad2660b3888eee9c8b896/semconv/internal/v2/http.go#L204) and [User-Agent](https://github.com/open-telemetry/opentelemetry-go/blob/38e1b499c3da3107694ad2660b3888eee9c8b896/semconv/internal/v2/http.go#L223).

### PoC

Send many requests with long randomly generated HTTP methods or/and User agents (e.g. a million) and observe how memory consumption increases during it.

### Impact

In order to be affected, the program has to configure a metrics pipeline, use [otelhttp.NewHandler](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/5f7e6ad5a49b45df45f61a1deb29d7f1158032df/instrumentation/net/http/otelhttp/handler.go#L63-L65) wrapper, and does not filter any unknown HTTP methods or User agents on the level o…

Security update for caddy

golang: html/template: improper handling of HTML-like comments within script contexts golang: html/template: improper handling of special tags within script contexts golang: crypto/tls: panic when processing post-handshake message on QUIC connections golang: crypto/tls: lack of a limit on buffered post-handshake opentelemetry: DoS vulnerability in otelhttp

Security update for containerd

Affected: Ubuntu:25.10: golang-opentelemetry-contrib, Ubuntu:26.04:LTS: golang-opentelemetry-contrib

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. A handler wrapper out of the box adds labels `http.user_agent` and `http.method` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent to it. HTTP header User-Agent or HTTP method for requests can be easily set by an attacker to be random and long. The library internally uses `httpconv.ServerRequest` that records every value for HTTP `method` and `User-Agent`. In order to be affected, a program has to use the `otelhttp.NewHandler` wrapper and not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc. Version 0.44.0 fixed this issue when the values collected for attribute `http.request.method` were changed to be restricted to a set of well-known values and other high cardinality attributes were removed. As a workaround to stop being affected, `otelhttp.WithFilter()` can be used, but it requires manual careful configuration to not log certain requests entirely. For convenience and safe usage of this library, it should by default mark with the label `unknown` non-standard HTTP methods and User agents to show that such requests were made but do not increase cardinality. In case someone wants to stay with the current behavior, library API should allow to enable it.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um einen Denial of Service Angriff durchzuführen und um Sicherheitsmechanismen zu umgehen.