1 files changed, 72 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2022-35252.patch b/meta/recipes-support/curl/curl/CVE-2022-35252.patch
new file mode 100644
index 0000000000..a5160c01f4
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2022-35252.patch
@@ -0,0 +1,72 @@
+From c9212bdb21f0cc90a1a60dfdbb716deefe78fd40 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Mon, 29 Aug 2022 00:09:17 +0200
+Subject: [PATCH] cookie: reject cookies with "control bytes"
+
+Rejects 0x01 - 0x1f (except 0x09) plus 0x7f
+
+Reported-by: Axel Chong
+
+Bug: https://curl.se/docs/CVE-2022-35252.html
+
+CVE-2022-35252
+
+Closes #9381
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/8dfc93e573ca740544a2d79ebb]
+
+Signed-off-by: Robert Joslyn <robert.joslyn@redrectangle.org>
+---
+ lib/cookie.c | 29 +++++++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+diff --git a/lib/cookie.c b/lib/cookie.c
+index a9ad20a..66c7715 100644
+--- a/lib/cookie.c
++++ b/lib/cookie.c
+@@ -412,6 +412,30 @@ static bool bad_domain(const char *domain)
+   return !strchr(domain, '.') && !strcasecompare(domain, "localhost");
+ }
+ 
++/*
++  RFC 6265 section 4.1.1 says a server should accept this range:
++
++  cookie-octet    = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
++
++  But Firefox and Chrome as of June 2022 accept space, comma and double-quotes
++  fine. The prime reason for filtering out control bytes is that some HTTP
++  servers return 400 for requests that contain such.
++*/
++static int invalid_octets(const char *p)
++{
++  /* Reject all bytes \x01 - \x1f (*except* \x09, TAB) + \x7f */
++  static const char badoctets[] = {
++    "\x01\x02\x03\x04\x05\x06\x07\x08\x0a"
++    "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
++    "\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x7f"
++  };
++  size_t vlen, len;
++  /* scan for all the octets that are *not* in cookie-octet */
++  len = strcspn(p, badoctets);
++  vlen = strlen(p);
++  return (len != vlen);
++}
++
+ /****************************************************************************
+  *
+  * Curl_cookie_add()
+@@ -558,6 +582,11 @@ Curl_cookie_add(struct Curl_easy *data,
+             badcookie = TRUE;
+             break;
+           }
++          if(invalid_octets(whatptr) || invalid_octets(name)) {
++            infof(data, "invalid octets in name/value, cookie dropped");
++            badcookie = TRUE;
++            break;
++          }
+         }
+         else if(!len) {
+           /* this was a "<name>=" with no content, and we must allow
+-- 
+2.35.1
+