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- Loudly disallow MNT_SUIDDIR mount flag for unprivileged users mounts.
- Style fixed. Submitted by: bde
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parent
c3e741f776
commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=127473
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@ -686,22 +686,21 @@ vfs_domount(
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if (error)
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return (error);
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}
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/*
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* Do not allow NFS export by non-root users.
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* Do not allow NFS export or MNT_SUIDDIR by unprivileged users.
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*/
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if (fsflags & MNT_EXPORTED) {
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if (fsflags & (MNT_EXPORTED | MNT_SUIDDIR)) {
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error = suser(td);
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if (error)
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return (error);
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}
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/*
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* Silently enforce MNT_NOSUID, MNT_NODEV and MNT_USER
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* for unprivileged users and remove MNT_SUIDDIR.
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* Silently enforce MNT_NODEV, MNT_NOSUID and MNT_USER for
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* unprivileged users.
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*/
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if (suser(td)) {
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fsflags &= ~MNT_SUIDDIR;
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fsflags |= MNT_NOSUID | MNT_NODEV | MNT_USER;
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}
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if (suser(td) != 0)
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fsflags |= MNT_NODEV | MNT_NOSUID | MNT_USER;
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/*
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* Get vnode to be covered
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*/
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