diff options
Diffstat (limited to 'meta/recipes-support/curl/curl/CVE-2023-27533.patch')
-rw-r--r-- | meta/recipes-support/curl/curl/CVE-2023-27533.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/meta/recipes-support/curl/curl/CVE-2023-27533.patch b/meta/recipes-support/curl/curl/CVE-2023-27533.patch new file mode 100644 index 0000000000..64ba135056 --- /dev/null +++ b/meta/recipes-support/curl/curl/CVE-2023-27533.patch @@ -0,0 +1,59 @@ +Backport of: + +From 538b1e79a6e7b0bb829ab4cecc828d32105d0684 Mon Sep 17 00:00:00 2001 +From: Daniel Stenberg <daniel@haxx.se> +Date: Mon, 6 Mar 2023 12:07:33 +0100 +Subject: [PATCH] telnet: only accept option arguments in ascii + +To avoid embedded telnet negotiation commands etc. + +Reported-by: Harry Sintonen +Closes #10728 + +Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/curl/tree/debian/patches/CVE-2023-27533.patch?h=ubuntu/focal-security +Upstream commit https://github.com/curl/curl/commit/538b1e79a6e7b0bb829ab4cecc828d32105d0684] +CVE: CVE-2023-27533 +Signed-off-by: Vijay Anusuri <vanusuri@mvista.com> +--- + lib/telnet.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +--- a/lib/telnet.c ++++ b/lib/telnet.c +@@ -815,6 +815,17 @@ static void printsub(struct Curl_easy *d + } + } + ++static bool str_is_nonascii(const char *str) ++{ ++ size_t len = strlen(str); ++ while(len--) { ++ if(*str & 0x80) ++ return TRUE; ++ str++; ++ } ++ return FALSE; ++} ++ + static CURLcode check_telnet_options(struct connectdata *conn) + { + struct curl_slist *head; +@@ -829,6 +840,8 @@ static CURLcode check_telnet_options(str + /* Add the user name as an environment variable if it + was given on the command line */ + if(conn->bits.user_passwd) { ++ if(str_is_nonascii(data->conn->user)) ++ return CURLE_BAD_FUNCTION_ARGUMENT; + msnprintf(option_arg, sizeof(option_arg), "USER,%s", conn->user); + beg = curl_slist_append(tn->telnet_vars, option_arg); + if(!beg) { +@@ -844,6 +857,9 @@ static CURLcode check_telnet_options(str + if(sscanf(head->data, "%127[^= ]%*[ =]%255s", + option_keyword, option_arg) == 2) { + ++ if(str_is_nonascii(option_arg)) ++ continue; ++ + /* Terminal type */ + if(strcasecompare(option_keyword, "TTYPE")) { + strncpy(tn->subopt_ttype, option_arg, 31); |