CVE-2021-43790

Katalog CVE

CVSS 8.1 · High EPSS 1,6%

Kerentanan Use After Free pada bytecodealliance lucet. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

Lucet is a native WebAssembly compiler and runtime. There is a bug in the main branch of `lucet-runtime` affecting all versions published to crates.io that allows a use-after-free in an Instance object that could result in memory corruption, data race, or other related issues. This bug was introduced early in the development of Lucet and is present in all releases. As a result of this bug, and dependent on the memory backing for the Instance objects, it is possible to trigger a use-after-free when the Instance is dropped. Users should upgrade to the main branch of the Lucet repository. Lucet no longer provides versioned releases on crates.io. There is no way to remediate this vulnerability without upgrading.

Rincian

Terbit di NVD

30 November 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

1,6% peluang dieksploitasi; lebih tinggi dari 75,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/bytecodealliance/lucet/commit/7c7757c772fb709c61b1442bcc1e1fbee97bf4a8 patch · advisory pihak ketiga
• https://crates.io/crates/lucet-runtime product · advisory pihak ketiga
• https://github.com/bytecodealliance/lucet/security/advisories/GHSA-hf79-8hjp-rrvq exploit · advisory pihak ketiga