diff options
Diffstat (limited to 'poky/meta/recipes-support/curl/curl/CVE-2023-27534.patch')
| -rw-r--r-- | poky/meta/recipes-support/curl/curl/CVE-2023-27534.patch | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/poky/meta/recipes-support/curl/curl/CVE-2023-27534.patch b/poky/meta/recipes-support/curl/curl/CVE-2023-27534.patch new file mode 100644 index 0000000000..9109faaf88 --- /dev/null +++ b/poky/meta/recipes-support/curl/curl/CVE-2023-27534.patch @@ -0,0 +1,122 @@ +From 4e2b52b5f7a3bf50a0f1494155717b02cc1df6d6 Mon Sep 17 00:00:00 2001 +From: Daniel Stenberg <daniel@haxx.se> +Date: Thu, 9 Mar 2023 16:22:11 +0100 +Subject: [PATCH] curl_path: create the new path with dynbuf + +CVE: CVE-2023-27534 +Upstream-Status: Backport [https://github.com/curl/curl/commit/4e2b52b5f7a3bf50a0f1494155717b02cc1df6d6] + +Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> +--- + lib/curl_path.c | 71 ++++++++++++++++++++++++------------------------- + 1 file changed, 35 insertions(+), 36 deletions(-) + +diff --git a/lib/curl_path.c b/lib/curl_path.c +index a1669d1..b9c470f 100644 +--- a/lib/curl_path.c ++++ b/lib/curl_path.c +@@ -30,66 +30,65 @@ + #include "escape.h" + #include "memdebug.h" + ++#define MAX_SSHPATH_LEN 100000 /* arbitrary */ ++ + /* figure out the path to work with in this particular request */ + CURLcode Curl_getworkingpath(struct Curl_easy *data, + char *homedir, /* when SFTP is used */ + char **path) /* returns the allocated + real path to work with */ + { +- char *real_path = NULL; + char *working_path; + size_t working_path_len; ++ struct dynbuf npath; + CURLcode result = + Curl_urldecode(data->state.up.path, 0, &working_path, + &working_path_len, REJECT_ZERO); + if(result) + return result; + ++ /* new path to switch to in case we need to */ ++ Curl_dyn_init(&npath, MAX_SSHPATH_LEN); ++ + /* Check for /~/, indicating relative to the user's home directory */ +- if(data->conn->handler->protocol & CURLPROTO_SCP) { +- real_path = malloc(working_path_len + 1); +- if(!real_path) { ++ if((data->conn->handler->protocol & CURLPROTO_SCP) && ++ (working_path_len > 3) && (!memcmp(working_path, "/~/", 3))) { ++ /* It is referenced to the home directory, so strip the leading '/~/' */ ++ if(Curl_dyn_addn(&npath, &working_path[3], working_path_len - 3)) { + free(working_path); + return CURLE_OUT_OF_MEMORY; + } +- if((working_path_len > 3) && (!memcmp(working_path, "/~/", 3))) +- /* It is referenced to the home directory, so strip the leading '/~/' */ +- memcpy(real_path, working_path + 3, working_path_len - 2); +- else +- memcpy(real_path, working_path, 1 + working_path_len); + } +- else if(data->conn->handler->protocol & CURLPROTO_SFTP) { +- if((working_path_len > 1) && (working_path[1] == '~')) { +- size_t homelen = strlen(homedir); +- real_path = malloc(homelen + working_path_len + 1); +- if(!real_path) { +- free(working_path); +- return CURLE_OUT_OF_MEMORY; +- } +- /* It is referenced to the home directory, so strip the +- leading '/' */ +- memcpy(real_path, homedir, homelen); +- real_path[homelen] = '/'; +- real_path[homelen + 1] = '\0'; +- if(working_path_len > 3) { +- memcpy(real_path + homelen + 1, working_path + 3, +- 1 + working_path_len -3); +- } ++ else if((data->conn->handler->protocol & CURLPROTO_SFTP) && ++ (working_path_len > 2) && !memcmp(working_path, "/~/", 3)) { ++ size_t len; ++ const char *p; ++ int copyfrom = 3; ++ if(Curl_dyn_add(&npath, homedir)) { ++ free(working_path); ++ return CURLE_OUT_OF_MEMORY; + } +- else { +- real_path = malloc(working_path_len + 1); +- if(!real_path) { +- free(working_path); +- return CURLE_OUT_OF_MEMORY; +- } +- memcpy(real_path, working_path, 1 + working_path_len); ++ /* Copy a separating '/' if homedir does not end with one */ ++ len = Curl_dyn_len(&npath); ++ p = Curl_dyn_ptr(&npath); ++ if(len && (p[len-1] != '/')) ++ copyfrom = 2; ++ ++ if(Curl_dyn_addn(&npath, ++ &working_path[copyfrom], working_path_len - copyfrom)) { ++ free(working_path); ++ return CURLE_OUT_OF_MEMORY; + } + } + +- free(working_path); ++ if(Curl_dyn_len(&npath)) { ++ free(working_path); + +- /* store the pointer for the caller to receive */ +- *path = real_path; ++ /* store the pointer for the caller to receive */ ++ *path = Curl_dyn_ptr(&npath); ++ } ++ else ++ *path = working_path; + + return CURLE_OK; + } +-- +2.25.1 + |