| [69cde8d] | 1 | Submitted By: Matthew Burgess (matthew at linuxfromscratch dot org)
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| 2 | Origin: http://security.ubuntu.com/ubuntu/pool/main/g/gzip/gzip_1.3.5-9ubuntu3.1.diff.gz
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| 3 | Date: 2005-05-12
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| 4 | Initial package version: 1.3.5
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| 5 | Description: Fix two security vulnerabilities in gzip: A path traversal
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| 6 | bug when using the -N option (CAN-2005-1228) and a race condition in the
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| 7 | file permission restore code (CAN-2005-0998).
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| 8 |
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| 9 | diff -Naur gzip-1.3.5.orig/gzip.c gzip-1.3.5/gzip.c
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| 10 | --- gzip-1.3.5.orig/gzip.c 2002-09-28 07:38:43.000000000 +0000
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| 11 | +++ gzip-1.3.5/gzip.c 2005-05-12 19:15:14.796031360 +0000
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| 12 | @@ -875,8 +875,11 @@
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| 13 | }
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| 14 |
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| 15 | close(ifd);
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| 16 | - if (!to_stdout && close(ofd)) {
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| 17 | - write_error();
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| 18 | + if (!to_stdout) {
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| 19 | + /* Copy modes, times, ownership, and remove the input file */
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| 20 | + copy_stat(&istat);
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| 21 | + if (close(ofd))
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| 22 | + write_error();
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| 23 | }
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| 24 | if (method == -1) {
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| 25 | if (!to_stdout) xunlink (ofname);
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| 26 | @@ -896,10 +899,6 @@
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| 27 | }
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| 28 | fprintf(stderr, "\n");
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| 29 | }
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| 30 | - /* Copy modes, times, ownership, and remove the input file */
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| 31 | - if (!to_stdout) {
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| 32 | - copy_stat(&istat);
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| 33 | - }
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| 34 | }
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| 35 |
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| 36 | /* ========================================================================
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| 37 | @@ -1324,6 +1323,8 @@
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| 38 | error("corrupted input -- file name too large");
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| 39 | }
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| 40 | }
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| 41 | + char *base2 = base_name (base);
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| 42 | + strcpy(base, base2);
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| 43 | /* If necessary, adapt the name to local OS conventions: */
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| 44 | if (!list) {
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| 45 | MAKE_LEGAL_NAME(base);
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| 46 | @@ -1725,7 +1726,7 @@
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| 47 | reset_times(ofname, ifstat);
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| 48 | #endif
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| 49 | /* Copy the protection modes */
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| 50 | - if (chmod(ofname, ifstat->st_mode & 07777)) {
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| 51 | + if (fchmod(ofd, ifstat->st_mode & 07777)) {
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| 52 | int e = errno;
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| 53 | WARN((stderr, "%s: ", progname));
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| 54 | if (!quiet) {
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| 55 | @@ -1734,7 +1735,7 @@
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| 56 | }
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| 57 | }
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| 58 | #ifndef NO_CHOWN
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| 59 | - chown(ofname, ifstat->st_uid, ifstat->st_gid); /* Copy ownership */
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| 60 | + fchown(ofd, ifstat->st_uid, ifstat->st_gid); /* Copy ownership */
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| 61 | #endif
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| 62 | remove_ofname = 0;
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| 63 | /* It's now safe to remove the input file: */
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