6.5
CVE-2021-3178
- EPSS 2.42%
- Veröffentlicht 19.01.2021 07:15:13
- Zuletzt bearbeitet 21.11.2024 06:21:04
- Quelle cve@mitre.org
- CVE-Watchlists
- Unerledigt
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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 5.10.8
Fedoraproject ≫ Fedora Version33
Debian ≫ Debian Linux Version9.0
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. 
Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 2.42% | 0.82 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 6.5 | 1.2 | 5.2 |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
|
| nvd@nist.gov | 5.5 | 8 | 4.9 |
AV:N/AC:L/Au:S/C:P/I:P/A:N
|
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51b2ee7d006a736a9126e8111d1f24e4fd0afaa6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SGB7TNDVQEOJ7NVTGX56UWHDNQM5TRC/
https://patchwork.kernel.org/project/linux-nfs/patch/20210111210129.GA11652%40fieldses.org/