CVE-2021-26843: sthttpd project sthttpd

csirt@kutim:~/threat-intel/cve/CVE-2021-26843

CVSS 7.5 · High EPSS 1,4%

Kerentanan Improper Restriction of Operations within the Bounds of a Memory Buffer pada sthttpd project sthttpd. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in sthttpd through 2.27.1. On systems where the strcpy function is implemented with memcpy, the de_dotdot function may cause a Denial-of-Service (daemon crash) due to overlapping memory ranges being passed to memcpy. This can triggered with an HTTP GET request for a crafted filename. NOTE: this is similar to CVE-2017-10671, but occurs in a different part of the de_dotdot function.

Rincian

Terbit di NVD: 7 Februari 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
EPSS (30 hari): 1,4% peluang dieksploitasi; lebih tinggi dari 72,5% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
sthttpd project	sthttpd	Semua versi hingga 2.27.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/blueness/sthttpd/issues/14 exploit · advisory pihak ketiga

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.