CVE-2020-8831

Katalog CVE

CVSS 5.5 · Medium EPSS 0,65%

Kerentanan Creation of Temporary File in Directory with Insecure Permissions pada canonical ubuntu linux, apport project apport. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

Apport creates a world writable lock file with root ownership in the world writable /var/lock/apport directory. If the apport/ directory does not exist (this is not uncommon as /var/lock is a tmpfs), it will create the directory, otherwise it will simply continue execution using the existing directory. This allows for a symlink attack if an attacker were to create a symlink at /var/lock/apport, changing apport's lock file location. This file could then be used to escalate privileges, for example. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.

Rincian

Terbit di NVD

22 April 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-379: Creation of Temporary File in Directory with Insecure Permissions
CWE-59: Improper Link Resolution Before File Access ('Link Following')

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://launchpad.net/bugs/1862348 exploit · advisory pihak ketiga
• https://usn.ubuntu.com/4315-1/ advisory pihak ketiga
• https://usn.ubuntu.com/4315-2/ advisory pihak ketiga