CVE-2021-39246: torproject tor browser

csirt@kutim:~/threat-intel/cve/CVE-2021-39246

CVSS 6.1 · Medium EPSS 0,48%

Kerentanan Insertion of Sensitive Information into Log File pada torproject tor browser. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

Tor Browser through 10.5.6 and 11.x through 11.0a4 allows a correlation attack that can compromise the privacy of visits to v2 onion addresses. Exact timestamps of these onion-service visits are logged locally, and an attacker might be able to compare them to timestamp data collected by the destination server (or collected by a rogue site within the Tor network).

Rincian

Terbit di NVD: 24 September 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 6.1 (Medium), sumber NVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-532: Insertion of Sensitive Information into Log File
EPSS (30 hari): 0,48% peluang dieksploitasi; lebih tinggi dari 39,3% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
torproject	tor browser	Semua versi hingga 10.5.6
torproject	tor browser	Versi 11.0 alpha2
torproject	tor browser	Versi 11.0 alpha4

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://gitlab.torproject.org/tpo/core/tor/-/commit/80c404c4b79f3bcba3fc4585d4c62a62a04f3ed9 patch · advisory vendor
https://gitlab.torproject.org/tpo/core/tor/-/merge_requests/434 advisory vendor
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-111.md exploit · advisory pihak ketiga
https://sick.codes/sick-2021-111 exploit · advisory pihak ketiga
https://www.privacyaffairs.com/cve-2021-39246-tor-vulnerability 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.