diff options
Diffstat (limited to 'meta/recipes-support/curl/curl/CVE-2022-32206.patch')
-rw-r--r-- | meta/recipes-support/curl/curl/CVE-2022-32206.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-support/curl/curl/CVE-2022-32206.patch b/meta/recipes-support/curl/curl/CVE-2022-32206.patch new file mode 100644 index 0000000000..25f5b27cc7 --- /dev/null +++ b/meta/recipes-support/curl/curl/CVE-2022-32206.patch @@ -0,0 +1,51 @@ +From e12531340b03d242d3f892aa8797faf12b56dddf Mon Sep 17 00:00:00 2001 +From: Daniel Stenberg <daniel@haxx.se> +Date: Mon, 16 May 2022 16:28:13 +0200 +Subject: [PATCH] content_encoding: return error on too many compression steps + +The max allowed steps is arbitrarily set to 5. + +Bug: https://curl.se/docs/CVE-2022-32206.html +CVE-2022-32206 +Reported-by: Harry Sintonen +Closes #9049 + +Upstream-Status: Backport [https://github.com/curl/curl/commit/3a09fbb7f264c67c43] +Signed-off-by: Robert Joslyn <robert.joslyn@redrectangle.org> +--- + lib/content_encoding.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/lib/content_encoding.c b/lib/content_encoding.c +index c03637a..6f994b3 100644 +--- a/lib/content_encoding.c ++++ b/lib/content_encoding.c +@@ -1026,12 +1026,16 @@ static const struct content_encoding *find_encoding(const char *name, + return NULL; + } + ++/* allow no more than 5 "chained" compression steps */ ++#define MAX_ENCODE_STACK 5 ++ + /* Set-up the unencoding stack from the Content-Encoding header value. + * See RFC 7231 section 3.1.2.2. */ + CURLcode Curl_build_unencoding_stack(struct Curl_easy *data, + const char *enclist, int maybechunked) + { + struct SingleRequest *k = &data->req; ++ int counter = 0; + + do { + const char *name; +@@ -1066,6 +1070,11 @@ CURLcode Curl_build_unencoding_stack(struct Curl_easy *data, + if(!encoding) + encoding = &error_encoding; /* Defer error at stack use. */ + ++ if(++counter >= MAX_ENCODE_STACK) { ++ failf(data, "Reject response due to %u content encodings", ++ counter); ++ return CURLE_BAD_CONTENT_ENCODING; ++ } + /* Stack the unencoding stage. */ + writer = new_unencoding_writer(data, encoding, k->writer_stack); + if(!writer) |