CVE-2021-44731

Katalog CVE

CVSS 7.8 · High EPSS 0,95%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada canonical snapd, canonical ubuntu linux +2 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Rincian

Terbit di NVD

17 Februari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

EPSS (30 hari)

0,95% peluang dieksploitasi; lebih tinggi dari 60,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://ubuntu.com/security/notices/USN-5292-1 patch · advisory vendor
• http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html exploit · advisory pihak ketiga · vdb entry
• http://seclists.org/fulldisclosure/2022/Dec/4 exploit · mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2022/02/18/2 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2022/02/23/1 exploit · mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2022/02/23/2 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2022/11/30/2 exploit · mailing list · advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5080 issue tracking · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXI...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ7...