CVEvulnerability

CVE-2021-3178

6.5 MEDIUM Published 2021-01-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-01-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
5.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:N
Weaknesses
CWE-22

Description

fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior

Affected configurations

• linux linux kernel (<= 5.10.8) • fedoraproject fedora 33 • debian debian linux 9.0

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References