CVE-2021-42835

Katalog CVE

CVSS 7.0 · High EPSS 1,2%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada plex media server. Skor CVSS 3.1 7.0 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).

Rincian

Terbit di NVD

8 Desember 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 67,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://forums.plex.tv/t/security-regarding-cve-2021-42835/761510 advisory vendor
• https://www.plex.tv/media-server-downloads/ product · advisory vendor
• https://bugsec.com/experts_teams/ advisory pihak ketiga
• https://ir-on.io/2021/12/02/local-privilege-plexcalation/ exploit · advisory pihak ketiga