diff options
Diffstat (limited to 'meta/recipes-extended/cpio/cpio-2.13/0001-Fix-CVE-2015-1197.patch')
| -rw-r--r-- | meta/recipes-extended/cpio/cpio-2.13/0001-Fix-CVE-2015-1197.patch | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/meta/recipes-extended/cpio/cpio-2.13/0001-Fix-CVE-2015-1197.patch b/meta/recipes-extended/cpio/cpio-2.13/0001-Fix-CVE-2015-1197.patch new file mode 100644 index 0000000000..5c999197ff --- /dev/null +++ b/meta/recipes-extended/cpio/cpio-2.13/0001-Fix-CVE-2015-1197.patch @@ -0,0 +1,178 @@ +From dcee489f821c1260a0136fcdfdb6ff4dd11086ac Mon Sep 17 00:00:00 2001 +From: Alexander Kanavin <alex.kanavin@gmail.com> +Date: Wed, 9 Dec 2015 17:58:03 +0200 +Subject: [PATCH] Fix CVE-2015-1197 + +Apply patch by Vitezslav Cizek of SuSE to fix CVE-2015-1197. +Upstream is dormant or no longer existing. To restore the old +behaviour use --extract-over-symlinks (Closes: #774669) +This issue has been discovered by Alexander Cherepanov. +Author: Vitezslav Cizek <vcizek@suse.cz> +Bug-Debian: https://bugs.debian.org/774669 + +Upstream-Status: Pending +CVE: CVE-2015-1197 +Signed-off-by: Robert Yang <liezhi.yang@windriver.com> +Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com> + +--- + doc/cpio.1 | 1 + + src/copyin.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + src/extern.h | 1 + + src/global.c | 3 +++ + src/main.c | 7 +++++++ + 5 files changed, 74 insertions(+) + +diff --git a/doc/cpio.1 b/doc/cpio.1 +index 2a68241..dc4676c 100644 +--- a/doc/cpio.1 ++++ b/doc/cpio.1 +@@ -49,6 +49,7 @@ cpio \- copy files to and from archives + [\fB\-\-no\-preserve\-owner\fR] [\fB\-\-message=\fIMESSAGE\fR] + [\fB\-\-force\-local\fR] [\fB\-\-no\-absolute\-filenames\fR] [\fB\-\-sparse\fR] + [\fB\-\-only\-verify\-crc\fR] [\fB\-\-to\-stdout\fR] [\fB\-\-quiet\fR] ++[\fB\-\-extract\-over\-symlinks\fR] + [\fB\-\-rsh\-command=\fICOMMAND\fR] + [\fIpattern\fR...] [\fB<\fR \fIarchive\fR] + +diff --git a/src/copyin.c b/src/copyin.c +index cde911e..053afe7 100644 +--- a/src/copyin.c ++++ b/src/copyin.c +@@ -695,6 +695,51 @@ copyin_link (struct cpio_file_stat *file_hdr, int in_file_des) + free (link_name); + } + ++ ++static int ++path_contains_symlink(char *path) ++{ ++ struct stat st; ++ char *slash; ++ char *nextslash; ++ ++ /* we got NULL pointer or empty string */ ++ if (!path || !*path) { ++ return false; ++ } ++ ++ slash = path; ++ ++ while ((nextslash = strchr(slash + 1, '/')) != NULL) { ++ slash = nextslash; ++ *slash = '\0'; ++ ++ if (lstat(path, &st) != 0) { ++ if (errno == ELOOP) { ++ /* ELOOP - too many symlinks */ ++ *slash = '/'; ++ return true; ++ } else if (errno == ENOMEM) { ++ /* No memory for lstat - terminate */ ++ xalloc_die(); ++ } else { ++ /* cannot lstat path - give up */ ++ *slash = '/'; ++ return false; ++ } ++ } ++ ++ if (S_ISLNK(st.st_mode)) { ++ *slash = '/'; ++ return true; ++ } ++ ++ *slash = '/'; ++ } ++ ++ return false; ++} ++ + static void + copyin_file (struct cpio_file_stat *file_hdr, int in_file_des) + { +@@ -1468,6 +1513,23 @@ process_copy_in () + { + /* Copy the input file into the directory structure. */ + ++ /* Can we write files over symlinks? */ ++ if (!extract_over_symlinks) ++ { ++ if (path_contains_symlink(file_hdr.c_name)) ++ { ++ /* skip the file */ ++ /* ++ fprintf(stderr, "Can't write over symlinks. Skipping %s\n", file_hdr.c_name); ++ tape_toss_input (in_file_des, file_hdr.c_filesize); ++ tape_skip_padding (in_file_des, file_hdr.c_filesize); ++ continue; ++ */ ++ /* terminate */ ++ error (1, 0, _("Can't write over symlinks: %s\n"), file_hdr.c_name); ++ } ++ } ++ + /* Do we need to rename the file? */ + if (rename_flag || rename_batch_file) + { +diff --git a/src/extern.h b/src/extern.h +index e27d662..d864bde 100644 +--- a/src/extern.h ++++ b/src/extern.h +@@ -96,6 +96,7 @@ extern char input_is_special; + extern char output_is_special; + extern char input_is_seekable; + extern char output_is_seekable; ++extern bool extract_over_symlinks; + extern int (*xstat) (); + extern void (*copy_function) (); + extern char *change_directory_option; +diff --git a/src/global.c b/src/global.c +index 57e505a..336fce4 100644 +--- a/src/global.c ++++ b/src/global.c +@@ -187,6 +187,9 @@ bool to_stdout_option = false; + /* The name this program was run with. */ + char *program_name; + ++/* Extract files over symbolic links */ ++bool extract_over_symlinks; ++ + /* A pointer to either lstat or stat, depending on whether + dereferencing of symlinks is done for input files. */ + int (*xstat) (); +diff --git a/src/main.c b/src/main.c +index a13861f..87cb309 100644 +--- a/src/main.c ++++ b/src/main.c +@@ -59,6 +59,7 @@ enum cpio_options { + DEBUG_OPTION, + BLOCK_SIZE_OPTION, + TO_STDOUT_OPTION, ++ EXTRACT_OVER_SYMLINKS, + RENUMBER_INODES_OPTION, + IGNORE_DEVNO_OPTION, + DEVICE_INDEPENDENT_OPTION +@@ -243,6 +244,8 @@ static struct argp_option options[] = { + N_("Create leading directories where needed"), GRID+1 }, + {"no-preserve-owner", NO_PRESERVE_OWNER_OPTION, 0, 0, + N_("Do not change the ownership of the files"), GRID+1 }, ++ {"extract-over-symlinks", EXTRACT_OVER_SYMLINKS, 0, 0, ++ N_("Force writing over symbolic links"), GRID+1 }, + {"unconditional", 'u', NULL, 0, + N_("Replace all files unconditionally"), GRID+1 }, + {"sparse", SPARSE_OPTION, NULL, 0, +@@ -432,6 +435,10 @@ crc newc odc bin ustar tar (all-caps also recognized)"), arg)); + no_chown_flag = true; + break; + ++ case EXTRACT_OVER_SYMLINKS: /* --extract-over-symlinks */ ++ extract_over_symlinks = true; ++ break; ++ + case 'o': /* Copy-out mode. */ + if (copy_function != 0) + USAGE_ERROR ((0, 0, _("Mode already defined"))); +-- +2.6.2 + |