CVE-2026-35469

Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise Certified Container ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Red Hat OpenShift Container Platform ausnutzen, um einen Denial of Service Angriff durchzuführen.

Ein Angreifer kann mehrere Schwachstellen in IBM Concert ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen, um einen SQL-Injection Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.

The SPDY/3 frame parser in spdystream does not validate attacker-controlled counts and lengths before allocating memory. A remote peer that can send SPDY frames to a service using spdystream can cause the process to allocate gigabytes of memory with a small number of malformed control frames, leading to an out-of-memory crash.   Three allocation paths in the receive side are affected: 1. **SETTINGS entry count** -- The SETTINGS frame reader reads a 32-bit `numSettings` from the payload and allocates a slice of that size without checking it against the declared frame length. An attacker can set `numSettings` to a value far exceeding the actual payload, triggering a large allocation before any setting data is read.   2. **Header count** -- `parseHeaderValueBlock` reads a 32-bit `numHeaders` from the decompressed header block and allocates an `http.Header` map of that size with no upper bound.   3. **Header field size** -- Individual header name and value lengths are read as 32-bit integers and used directly as allocation sizes with no validation.   Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into attacker-controlled bytes that the parser interprets as 32-bit counts and lengths. A single crafted frame is enough to exhaust process memory. ## Impact  Any program that accepts SPDY connections using spdystream -- directly or through a dependent library -- is affected. A remote peer that can send SPDY frames to the service can crash the process with a single crafted SPDY control frame, causing denial of service. ## Affected versions  `github.com/moby/spdystream` <= v0.5.0 ## Fix  v0.5.1 addresses the receive-side allocation bugs and adds related hardening:   **Core fixes:**   - **SETTINGS entry-count validation** -- The SETTINGS frame reader now checks that `numSettings` is consistent with the declared frame length (`numSettings <= (length-4)/8`) before allocating.   - **Header count limit** -- `parseHeaderValueBlock` enforces a maximum number of headers per frame (default: 1000).   - **Header field size limit** -- Individual header name and value lengths are checked against a per-field size limit (default: 1 MiB) before allocation.   - **Connection closure on protocol error** -- The connection read loop now closes the underlying `net.Conn` when it encounters an `InvalidControlFrame` error, preventing further exploitation on the same connection.   **Additional hardening:**   - **Write-side bounds checks** -- All frame write methods now verify that payloads fit within the 24-bit length field, preventing the library from producing invalid frames.   **Configurable limits:**   - Callers can adjust the defaults using `NewConnectionWithOptions` or the lower-level `spdy.NewFramerWithOptions` with functional options: `WithMaxControlFramePayloadSize`, `WithMaxHeaderFieldSize`, and `WithMaxHeaderCount`.  

The SPDY/3 frame parser in spdystream does not validate attacker-controlled counts and lengths before allocating memory. A remote peer that can send SPDY frames to a service using spdystream can cause the process to allocate gigabytes of memory with a small number of malformed control frames, leading to an out-of-memory crash. Three allocation paths in the receive side are affected: 1. SETTINGS entry count: The SETTINGS frame reader reads a 32-bit numSettings from the payload and allocates a slice of that size without checking it against the declared frame length. 2. Header count: parseHeaderValueBlock reads a 32-bit numHeaders from the decompressed header block and allocates an http.Header map of that size with no upper bound. 3. Header field size: Individual header name and value lengths are read as 32-bit integers and used directly as allocation sizes with no validation. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into attacker-controlled bytes that the parser interprets as 32-bit counts and lengths. A single crafted frame is enough to exhaust process memory.