CVE-2020-12062

Katalog CVE

CVSS 7.5 · High EPSS 2,2%

Kerentanan Improper Input Validation pada openbsd openssh. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.

Rincian

Terbit di NVD

1 Juni 2020

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:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation

EPSS (30 hari)

2,2% peluang dieksploitasi; lebih tinggi dari 81,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.openssh.com/txt/release-8.3 release notes · advisory vendor
• https://github.com/openssh/openssh-portable/commit/955854cafca88e0cdcd3d09ca1ad4ada465364a1 patch · advisory pihak ketiga
• https://github.com/openssh/openssh-portable/commit/aad87b88fc2536b1ea023213729aaf4eaabe1894 advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2020/05/27/1 mailing list · release notes · advisory pihak ketiga