csirt@kutim:~/threat-intel/cve/CVE-2021-39228

Katalog CVE

CVSS 9.8 · Critical EPSS 1,3%

Kerentanan Use After Free pada linuxfoundation tremor. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Tremor is an event processing system for unstructured data. A vulnerability exists between versions 0.7.2 and 0.11.6. This vulnerability is a memory safety Issue when using `patch` or `merge` on `state` and assign the result back to `state`. In this case, affected versions of Tremor and the tremor-script crate maintains references to memory that might have been freed already. And these memory regions can be accessed by retrieving the `state`, e.g. send it over TCP or HTTP. This requires the Tremor server (or any other program using tremor-script) to execute a tremor-script script that uses the mentioned language construct. The issue has been patched in version 0.11.6 by removing the optimization and always cloning the target expression of a Merge or Patch. If an upgrade is not possible, a possible workaround is to avoid the optimization by introducing a temporary variable and not immediately reassigning to `state`.

Rincian

Terbit di NVD
17 September 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-416: Use After Free
CWE-825: Expired Pointer Dereference
EPSS (30 hari)
1,3% peluang dieksploitasi; lebih tinggi dari 70,7% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
linuxfoundation tremor Versi 0.7.2 hingga sebelum 0.11.6

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.