CVE-2021-40153

Katalog CVE

CVSS 8.1 · High EPSS 2,5%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada squashfs-tools project squashfs-tools, fedoraproject fedora +2 lainnya. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.

Rincian

Terbit di NVD

27 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

2,5% peluang dieksploitasi; lebih tinggi dari 84,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/plougher/squashfs-tools/commit/79b5a555058eef4e1e7ff220c344d39f8cd09646 patch · advisory pihak ketiga
• https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1941790 advisory pihak ketiga
• https://github.com/plougher/squashfs-tools/issues/72 exploit · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/08/msg00030.html mailing list · advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4967 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSMRKVJMJFX3M...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RAOZ4BKWAC4Y3...
• https://security.gentoo.org/glsa/202305-29