Описание
Security update for nodejs20
This update for nodejs20 fixes the following issues:
Update to version 20.20.2.
- CVE-2026-21717: trivially predictable hash collisions due to flaw in V8's string hashing mechanism allows for performance degradation via a crafted request (bsc#1260494).
- CVE-2026-21716: incomplete fix for CVE-2024-36137 allows promise-based FileHandle methods to be used to modify file permissions and ownership on already-open file descriptors (bsc#1260462).
- CVE-2026-21715: flaw in the Permission Model filesystem enforcement allows for file existence disclosure and
filesystem path enumeration via
fs.realpathSync.native()(bsc#1260482). - CVE-2026-21714: memory leak in Node.js HTTP/2 server allows for resource exhaustion via
WINDOW_UPDATEframes sent on stream 0 (bsc#1260480). - CVE-2026-21713: timing side-channel due to flaw in Node.js HMAC verification allows for discovery of HMAC values and potential MAC forgery (bsc#1260463).
- CVE-2026-21710: uncaught
TypeErrorwhen handling HTTP requests allows for a process crash via requests with a header named__proto__when the application accessesreq.headersDistinct(bsc#1260455). - CVE-2026-21637: flaw in TLS error handling allows for resource exhaustion and crash when
pskCallbackorALPNCallbackare in use (bsc#1256576).
Список пакетов
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
SUSE Linux Enterprise Server 15 SP5-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP5
Ссылки
- Link for SUSE-SU-2026:1371-1
- E-Mail link for SUSE-SU-2026:1371-1
- SUSE Security Ratings
- SUSE Bug 1256576
- SUSE Bug 1260455
- SUSE Bug 1260462
- SUSE Bug 1260463
- SUSE Bug 1260480
- SUSE Bug 1260482
- SUSE Bug 1260494
- SUSE CVE CVE-2026-21637 page
- SUSE CVE CVE-2026-21710 page
- SUSE CVE CVE-2026-21713 page
- SUSE CVE CVE-2026-21714 page
- SUSE CVE CVE-2026-21715 page
- SUSE CVE CVE-2026-21716 page
- SUSE CVE CVE-2026-21717 page
Описание
A flaw in Node.js TLS error handling allows remote attackers to crash or exhaust resources of a TLS server when `pskCallback` or `ALPNCallback` are in use. Synchronous exceptions thrown during these callbacks bypass standard TLS error handling paths (tlsClientError and error), causing either immediate process termination or silent file descriptor leaks that eventually lead to denial of service. Because these callbacks process attacker-controlled input during the TLS handshake, a remote client can repeatedly trigger the issue. This vulnerability affects TLS servers using PSK or ALPN callbacks across Node.js versions where these callbacks throw without being safely wrapped.
Затронутые продукты
Ссылки
- CVE-2026-21637
- SUSE Bug 1256576
- SUSE Bug 1260482
Описание
A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`. When this occurs, `dest["__proto__"]` resolves to `Object.prototype` rather than `undefined`, causing `.push()` to be called on a non-array. This exception is thrown synchronously inside a property getter and cannot be intercepted by `error` event listeners, meaning it cannot be handled without wrapping every `req.headersDistinct` access in a `try/catch`. * This vulnerability affects all Node.js HTTP servers on **20.x, 22.x, 24.x, and v25.x**
Затронутые продукты
Ссылки
- CVE-2026-21710
- SUSE Bug 1260455
- SUSE Bug 1260482
Описание
A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior could be exploited as a timing oracle to infer HMAC values. Node.js already provides timing-safe comparison primitives used elsewhere in the codebase, indicating this is an oversight rather than an intentional design decision. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**.
Затронутые продукты
Ссылки
- CVE-2026-21713
- SUSE Bug 1260463
- SUSE Bug 1260482
Описание
A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up. This vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25.
Затронутые продукты
Ссылки
- CVE-2026-21714
- SUSE Bug 1260480
- SUSE Bug 1260482
Описание
A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync.native()` without the required read permission checks, while all comparable filesystem functions correctly enforce them. As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync.native()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-read` is intentionally restricted.
Затронутые продукты
Ссылки
- CVE-2026-21715
- SUSE Bug 1260482
Описание
An incomplete fix for CVE-2024-36137 leaves `FileHandle.chmod()` and `FileHandle.chown()` in the promises API without the required permission checks, while their callback-based equivalents (`fs.fchmod()`, `fs.fchown()`) were correctly patched. As a result, code running under `--permission` with restricted `--allow-fs-write` can still use promise-based `FileHandle` methods to modify file permissions and ownership on already-open file descriptors, bypassing the intended write restrictions. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted.
Затронутые продукты
Ссылки
- CVE-2026-21716
- SUSE Bug 1260462
- SUSE Bug 1260482
Описание
A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process. The most common trigger is any endpoint that calls `JSON.parse()` on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**.
Затронутые продукты
Ссылки
- CVE-2026-21717
- SUSE Bug 1260494