diff options
Diffstat (limited to 'main/curl/CVE-2022-32207.patch')
| -rw-r--r-- | main/curl/CVE-2022-32207.patch | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/main/curl/CVE-2022-32207.patch b/main/curl/CVE-2022-32207.patch new file mode 100644 index 00000000000..e8875e39fae --- /dev/null +++ b/main/curl/CVE-2022-32207.patch @@ -0,0 +1,281 @@ +Patch-Source: https://github.com/curl/curl/commit/20f9dd6bae50b7223171b17ba7798946e74f877f +From 20f9dd6bae50b7223171b17ba7798946e74f877f Mon Sep 17 00:00:00 2001 +From: Daniel Stenberg <daniel@haxx.se> +Date: Wed, 25 May 2022 10:09:53 +0200 +Subject: [PATCH] fopen: add Curl_fopen() for better overwriting of files + +Bug: https://curl.se/docs/CVE-2022-32207.html +CVE-2022-32207 +Reported-by: Harry Sintonen +Closes #9050 +--- + CMakeLists.txt | 1 + + configure.ac | 1 + + lib/Makefile.inc | 2 + + lib/cookie.c | 19 ++----- + lib/curl_config.h.cmake | 3 ++ + lib/fopen.c | 113 ++++++++++++++++++++++++++++++++++++++++ + lib/fopen.h | 30 +++++++++++ + 7 files changed, 154 insertions(+), 15 deletions(-) + create mode 100644 lib/fopen.c + create mode 100644 lib/fopen.h + +diff --git a/CMakeLists.txt b/CMakeLists.txt +index 45d763d5a9c1d..ad20777f3d688 100644 +--- a/CMakeLists.txt ++++ b/CMakeLists.txt +@@ -1067,6 +1067,7 @@ elseif(HAVE_LIBSOCKET) + set(CMAKE_REQUIRED_LIBRARIES socket) + endif() + ++check_symbol_exists(fchmod "${CURL_INCLUDES}" HAVE_FCHMOD) + check_symbol_exists(basename "${CURL_INCLUDES}" HAVE_BASENAME) + check_symbol_exists(socket "${CURL_INCLUDES}" HAVE_SOCKET) + check_symbol_exists(select "${CURL_INCLUDES}" HAVE_SELECT) +diff --git a/configure.ac b/configure.ac +index b0245b99a669f..de2dee5a484ed 100644 +--- a/configure.ac ++++ b/configure.ac +@@ -3438,6 +3438,7 @@ AC_CHECK_DECLS([getpwuid_r], [], [AC_DEFINE(HAVE_DECL_GETPWUID_R_MISSING, 1, "Se + + + AC_CHECK_FUNCS([fnmatch \ ++ fchmod \ + geteuid \ + getpass_r \ + getppid \ +diff --git a/lib/Makefile.inc b/lib/Makefile.inc +index 533e16df97020..9bd8e324bd1c1 100644 +--- a/lib/Makefile.inc ++++ b/lib/Makefile.inc +@@ -137,6 +137,7 @@ LIB_CFILES = \ + escape.c \ + file.c \ + fileinfo.c \ ++ fopen.c \ + formdata.c \ + ftp.c \ + ftplistparser.c \ +@@ -270,6 +271,7 @@ LIB_HFILES = \ + escape.h \ + file.h \ + fileinfo.h \ ++ fopen.h \ + formdata.h \ + ftp.h \ + ftplistparser.h \ +diff --git a/lib/cookie.c b/lib/cookie.c +index a1ab89532033b..cb57b86387191 100644 +--- a/lib/cookie.c ++++ b/lib/cookie.c +@@ -99,8 +99,8 @@ Example set of cookies: + #include "curl_get_line.h" + #include "curl_memrchr.h" + #include "parsedate.h" +-#include "rand.h" + #include "rename.h" ++#include "fopen.h" + + /* The last 3 #include files should be in this order */ + #include "curl_printf.h" +@@ -1641,20 +1641,9 @@ static CURLcode cookie_output(struct Curl_easy *data, + use_stdout = TRUE; + } + else { +- unsigned char randsuffix[9]; +- +- if(Curl_rand_hex(data, randsuffix, sizeof(randsuffix))) +- return 2; +- +- tempstore = aprintf("%s.%s.tmp", filename, randsuffix); +- if(!tempstore) +- return CURLE_OUT_OF_MEMORY; +- +- out = fopen(tempstore, FOPEN_WRITETEXT); +- if(!out) { +- error = CURLE_WRITE_ERROR; ++ error = Curl_fopen(data, filename, &out, &tempstore); ++ if(error) + goto error; +- } + } + + fputs("# Netscape HTTP Cookie File\n" +@@ -1701,7 +1690,7 @@ static CURLcode cookie_output(struct Curl_easy *data, + if(!use_stdout) { + fclose(out); + out = NULL; +- if(Curl_rename(tempstore, filename)) { ++ if(tempstore && Curl_rename(tempstore, filename)) { + unlink(tempstore); + error = CURLE_WRITE_ERROR; + goto error; +diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake +index cd4b568d89948..eb2c62b971453 100644 +--- a/lib/curl_config.h.cmake ++++ b/lib/curl_config.h.cmake +@@ -159,6 +159,9 @@ + /* Define to 1 if you have the <assert.h> header file. */ + #cmakedefine HAVE_ASSERT_H 1 + ++/* Define to 1 if you have the `fchmod' function. */ ++#cmakedefine HAVE_FCHMOD 1 ++ + /* Define to 1 if you have the `basename' function. */ + #cmakedefine HAVE_BASENAME 1 + +diff --git a/lib/fopen.c b/lib/fopen.c +new file mode 100644 +index 0000000000000..ad3691ba9d158 +--- /dev/null ++++ b/lib/fopen.c +@@ -0,0 +1,113 @@ ++/*************************************************************************** ++ * _ _ ____ _ ++ * Project ___| | | | _ \| | ++ * / __| | | | |_) | | ++ * | (__| |_| | _ <| |___ ++ * \___|\___/|_| \_\_____| ++ * ++ * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al. ++ * ++ * This software is licensed as described in the file COPYING, which ++ * you should have received as part of this distribution. The terms ++ * are also available at https://curl.se/docs/copyright.html. ++ * ++ * You may opt to use, copy, modify, merge, publish, distribute and/or sell ++ * copies of the Software, and permit persons to whom the Software is ++ * furnished to do so, under the terms of the COPYING file. ++ * ++ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY ++ * KIND, either express or implied. ++ * ++ * SPDX-License-Identifier: curl ++ * ++ ***************************************************************************/ ++ ++#include "curl_setup.h" ++ ++#if !defined(CURL_DISABLE_COOKIES) || !defined(CURL_DISABLE_ALTSVC) || \ ++ !defined(CURL_DISABLE_HSTS) ++ ++#ifdef HAVE_FCNTL_H ++#include <fcntl.h> ++#endif ++ ++#include "urldata.h" ++#include "rand.h" ++#include "fopen.h" ++/* The last 3 #include files should be in this order */ ++#include "curl_printf.h" ++#include "curl_memory.h" ++#include "memdebug.h" ++ ++/* ++ * Curl_fopen() opens a file for writing with a temp name, to be renamed ++ * to the final name when completed. If there is an existing file using this ++ * name at the time of the open, this function will clone the mode from that ++ * file. if 'tempname' is non-NULL, it needs a rename after the file is ++ * written. ++ */ ++CURLcode Curl_fopen(struct Curl_easy *data, const char *filename, ++ FILE **fh, char **tempname) ++{ ++ CURLcode result = CURLE_WRITE_ERROR; ++ unsigned char randsuffix[9]; ++ char *tempstore = NULL; ++ struct_stat sb; ++ int fd = -1; ++ *tempname = NULL; ++ ++ if(stat(filename, &sb) == -1 || !S_ISREG(sb.st_mode)) { ++ /* a non-regular file, fallback to direct fopen() */ ++ *fh = fopen(filename, FOPEN_WRITETEXT); ++ if(*fh) ++ return CURLE_OK; ++ goto fail; ++ } ++ ++ result = Curl_rand_hex(data, randsuffix, sizeof(randsuffix)); ++ if(result) ++ goto fail; ++ ++ tempstore = aprintf("%s.%s.tmp", filename, randsuffix); ++ if(!tempstore) { ++ result = CURLE_OUT_OF_MEMORY; ++ goto fail; ++ } ++ ++ result = CURLE_WRITE_ERROR; ++ fd = open(tempstore, O_WRONLY | O_CREAT | O_EXCL, 0600); ++ if(fd == -1) ++ goto fail; ++ ++#ifdef HAVE_FCHMOD ++ { ++ struct_stat nsb; ++ if((fstat(fd, &nsb) != -1) && ++ (nsb.st_uid == sb.st_uid) && (nsb.st_gid == sb.st_gid)) { ++ /* if the user and group are the same, clone the original mode */ ++ if(fchmod(fd, sb.st_mode) == -1) ++ goto fail; ++ } ++ } ++#endif ++ ++ *fh = fdopen(fd, FOPEN_WRITETEXT); ++ if(!*fh) ++ goto fail; ++ ++ *tempname = tempstore; ++ return CURLE_OK; ++ ++fail: ++ if(fd != -1) { ++ close(fd); ++ unlink(tempstore); ++ } ++ ++ free(tempstore); ++ ++ *tempname = NULL; ++ return result; ++} ++ ++#endif /* ! disabled */ +diff --git a/lib/fopen.h b/lib/fopen.h +new file mode 100644 +index 0000000000000..289e55f2afd24 +--- /dev/null ++++ b/lib/fopen.h +@@ -0,0 +1,30 @@ ++#ifndef HEADER_CURL_FOPEN_H ++#define HEADER_CURL_FOPEN_H ++/*************************************************************************** ++ * _ _ ____ _ ++ * Project ___| | | | _ \| | ++ * / __| | | | |_) | | ++ * | (__| |_| | _ <| |___ ++ * \___|\___/|_| \_\_____| ++ * ++ * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al. ++ * ++ * This software is licensed as described in the file COPYING, which ++ * you should have received as part of this distribution. The terms ++ * are also available at https://curl.se/docs/copyright.html. ++ * ++ * You may opt to use, copy, modify, merge, publish, distribute and/or sell ++ * copies of the Software, and permit persons to whom the Software is ++ * furnished to do so, under the terms of the COPYING file. ++ * ++ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY ++ * KIND, either express or implied. ++ * ++ * SPDX-License-Identifier: curl ++ * ++ ***************************************************************************/ ++ ++CURLcode Curl_fopen(struct Curl_easy *data, const char *filename, ++ FILE **fh, char **tempname); ++ ++#endif |