CVE-2021-20197

Katalog CVE

CVSS 6.3 · Medium EPSS 0,30%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada gnu binutils, redhat enterprise linux +4 lainnya. Skor CVSS 3.1 6.3 (Medium) menurut NVD.

Deskripsi (NVD)

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.

Rincian

Terbit di NVD

26 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

EPSS (30 hari)

0,30% peluang dieksploitasi; lebih tinggi dari 21,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1913743 issue tracking · patch · advisory pihak ketiga
• https://sourceware.org/bugzilla/show_bug.cgi?id=26945 issue tracking · patch · advisory pihak ketiga
• https://security.gentoo.org/glsa/202208-30 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210528-0009/ advisory pihak ketiga