39 lines
1.2 KiB
Diff
39 lines
1.2 KiB
Diff
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From 3feb8669d875d03c9ceb82e208ef40ddda8eb908 Mon Sep 17 00:00:00 2001
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From: Andrew Tridgell <andrew@tridgell.net>
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Date: Sat, 23 Nov 2024 11:08:03 +1100
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Subject: [PATCH 1/4] refuse fuzzy options when fuzzy not selected
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this prevents a malicious server providing a file to compare to when
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the user has not given the fuzzy option
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---
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receiver.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/receiver.c b/receiver.c
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index 6b4b369e..2d7f6033 100644
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--- a/receiver.c
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+++ b/receiver.c
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@@ -66,6 +66,7 @@ extern char sender_file_sum[MAX_DIGEST_LEN];
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extern struct file_list *cur_flist, *first_flist, *dir_flist;
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extern filter_rule_list daemon_filter_list;
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extern OFF_T preallocated_len;
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+extern int fuzzy_basis;
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extern struct name_num_item *xfer_sum_nni;
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extern int xfer_sum_len;
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@@ -716,6 +717,10 @@ int recv_files(int f_in, int f_out, char *local_name)
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fnamecmp = get_backup_name(fname);
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break;
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case FNAMECMP_FUZZY:
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+ if (fuzzy_basis == 0) {
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+ rprintf(FERROR_XFER, "rsync: refusing malicious fuzzy operation for %s\n", xname);
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+ exit_cleanup(RERR_PROTOCOL);
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+ }
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if (file->dirname) {
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pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname);
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fnamecmp = fnamecmpbuf;
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--
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2.34.1
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