CVE-2021-3178

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

References

https://patchwork.kernel.org/project/linux-nfs/patch/20210111210129.GA11652%40fieldses.org/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SGB7TNDVQEOJ7NVTGX56UWHDNQM5TRC/

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3