From: Archana Polampalli <archana.polampa...@windriver.com> A path traversal vulnerability exists in rsync. It stems from behavior enabled by the `--inc-recursive` option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the `--inc-recursive` option, a lack of proper symlink verification coupled with deduplication checks occurring on a per-file-list basis could allow a server to write files outside of the client's intended destination directory. A malicious server could write malicious files to arbitrary locations named after valid directories/paths on the client.
Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> --- .../rsync/files/CVE-2024-12087-0001.patch | 49 +++++++++++++++++++ .../rsync/files/CVE-2024-12087-0002.patch | 31 ++++++++++++ .../rsync/files/CVE-2024-12087-0003.patch | 40 +++++++++++++++ meta/recipes-devtools/rsync/rsync_3.2.7.bb | 3 ++ 4 files changed, 123 insertions(+) create mode 100644 meta/recipes-devtools/rsync/files/CVE-2024-12087-0001.patch create mode 100644 meta/recipes-devtools/rsync/files/CVE-2024-12087-0002.patch create mode 100644 meta/recipes-devtools/rsync/files/CVE-2024-12087-0003.patch diff --git a/meta/recipes-devtools/rsync/files/CVE-2024-12087-0001.patch b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0001.patch new file mode 100644 index 0000000000..67abc64a62 --- /dev/null +++ b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0001.patch @@ -0,0 +1,49 @@ +From 688f5c379a433038bde36897a156d589be373a98 Mon Sep 17 00:00:00 2001 +From: Wayne Davison <wa...@opencoder.net> +Date: Thu, 14 Nov 2024 15:46:50 -0800 +Subject: [PATCH] Refuse a duplicate dirlist. + +CVE: CVE-2024-12087 + +Upstream-Status: Backport [https://git.samba.org/?p=rsync.git;a=commit;h=688f5c379a433038bde36897a156d589be373a98] + +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + flist.c | 9 +++++++++ + rsync.h | 1 + + 2 files changed, 10 insertions(+) + +diff --git a/flist.c b/flist.c +index 464d556e..847b1054 100644 +--- a/flist.c ++++ b/flist.c +@@ -2584,6 +2584,15 @@ struct file_list *recv_file_list(int f, int dir_ndx) + init_hard_links(); + #endif + ++ if (inc_recurse && dir_ndx >= 0) { ++ struct file_struct *file = dir_flist->files[dir_ndx]; ++ if (file->flags & FLAG_GOT_DIR_FLIST) { ++ rprintf(FERROR_XFER, "rsync: refusing malicious duplicate flist for dir %d\n", dir_ndx); ++ exit_cleanup(RERR_PROTOCOL); ++ } ++ file->flags |= FLAG_GOT_DIR_FLIST; ++ } ++ + flist = flist_new(0, "recv_file_list"); + flist_expand(flist, FLIST_START_LARGE); + +diff --git a/rsync.h b/rsync.h +index 0f9e277f..b9a7101a 100644 +--- a/rsync.h ++++ b/rsync.h +@@ -84,6 +84,7 @@ + #define FLAG_DUPLICATE (1<<4) /* sender */ + #define FLAG_MISSING_DIR (1<<4) /* generator */ + #define FLAG_HLINKED (1<<5) /* receiver/generator (checked on all types) */ ++#define FLAG_GOT_DIR_FLIST (1<<5)/* sender/receiver/generator - dir_flist only */ + #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */ + #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */ + #define FLAG_HLINK_LAST (1<<7) /* receiver/generator */ +-- +2.40.0 diff --git a/meta/recipes-devtools/rsync/files/CVE-2024-12087-0002.patch b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0002.patch new file mode 100644 index 0000000000..8a22e0c371 --- /dev/null +++ b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0002.patch @@ -0,0 +1,31 @@ +From 344327385fa47fa5bb67a32c237735e6240cfb93 Mon Sep 17 00:00:00 2001 +From: Andrew Tridgell <and...@tridgell.net> +Date: Tue, 26 Nov 2024 16:12:45 +1100 +Subject: [PATCH] range check dir_ndx before use + +CVE: CVE-2024-12087 + +Upstream-Status: Backport [https://git.samba.org/?p=rsync.git;a=commit;h=344327385fa47fa5bb67a32c237735e6240cfb93] + +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + flist.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/flist.c b/flist.c +index 847b1054..087f9da6 100644 +--- a/flist.c ++++ b/flist.c +@@ -2585,6 +2585,10 @@ struct file_list *recv_file_list(int f, int dir_ndx) + #endif + + if (inc_recurse && dir_ndx >= 0) { ++ if (dir_ndx >= dir_flist->used) { ++ rprintf(FERROR_XFER, "rsync: refusing invalid dir_ndx %u >= %u\n", dir_ndx, dir_flist->used); ++ exit_cleanup(RERR_PROTOCOL); ++ } + struct file_struct *file = dir_flist->files[dir_ndx]; + if (file->flags & FLAG_GOT_DIR_FLIST) { + rprintf(FERROR_XFER, "rsync: refusing malicious duplicate flist for dir %d\n", dir_ndx); +-- +2.40.0 diff --git a/meta/recipes-devtools/rsync/files/CVE-2024-12087-0003.patch b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0003.patch new file mode 100644 index 0000000000..0ece69c4e7 --- /dev/null +++ b/meta/recipes-devtools/rsync/files/CVE-2024-12087-0003.patch @@ -0,0 +1,40 @@ +From 996af4a79f9afe4d7158ecdd87c78cee382c6b39 Mon Sep 17 00:00:00 2001 +From: Natanael Copa <nc...@alpinelinux.org> +Date: Wed, 15 Jan 2025 15:10:24 +0100 +Subject: [PATCH] Fix FLAG_GOT_DIR_FLIST collission with FLAG_HLINKED + +fixes commit 688f5c379a43 (Refuse a duplicate dirlist.) + +Fixes: https://github.com/RsyncProject/rsync/issues/702 +Fixes: https://github.com/RsyncProject/rsync/issues/697 +CVE: CVE-2024-12087 + +Upstream-Status: Backport [https://github.com/RsyncProject/rsync/commit/996af4a79f9afe4d7158ecdd87c78cee382c6b39] + +Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> +--- + rsync.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/rsync.h b/rsync.h +index 9be1297b..479ac484 100644 +--- a/rsync.h ++++ b/rsync.h +@@ -84,7 +84,6 @@ + #define FLAG_DUPLICATE (1<<4) /* sender */ + #define FLAG_MISSING_DIR (1<<4) /* generator */ + #define FLAG_HLINKED (1<<5) /* receiver/generator (checked on all types) */ +-#define FLAG_GOT_DIR_FLIST (1<<5)/* sender/receiver/generator - dir_flist only */ + #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */ + #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */ + #define FLAG_HLINK_LAST (1<<7) /* receiver/generator */ +@@ -93,6 +92,7 @@ + #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */ + #define FLAG_TIME_FAILED (1<<11)/* generator */ + #define FLAG_MOD_NSEC (1<<12) /* sender/receiver/generator */ ++#define FLAG_GOT_DIR_FLIST (1<<13)/* sender/receiver/generator - dir_flist only */ + + /* These flags are passed to functions but not stored. */ + +-- +2.40.0 diff --git a/meta/recipes-devtools/rsync/rsync_3.2.7.bb b/meta/recipes-devtools/rsync/rsync_3.2.7.bb index 0bde73aad2..d6942dc595 100644 --- a/meta/recipes-devtools/rsync/rsync_3.2.7.bb +++ b/meta/recipes-devtools/rsync/rsync_3.2.7.bb @@ -22,6 +22,9 @@ SRC_URI = "https://download.samba.org/pub/${BPN}/src/${BP}.tar.gz \ file://CVE-2024-12086-0002.patch \ file://CVE-2024-12086-0003.patch \ file://CVE-2024-12086-0004.patch \ + file://CVE-2024-12087-0001.patch \ + file://CVE-2024-12087-0002.patch \ + file://CVE-2024-12087-0003.patch \ " SRC_URI[sha256sum] = "4e7d9d3f6ed10878c58c5fb724a67dacf4b6aac7340b13e488fb2dc41346f2bb" -- 2.40.0
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