1 files changed, 43 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2021-22925.patch b/meta/recipes-support/curl/curl/CVE-2021-22925.patch
new file mode 100644
index 0000000000..13b55f76be
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2021-22925.patch
@@ -0,0 +1,43 @@
+Subject: [PATCH] telnet: fix option parser to not send uninitialized
+ contents CVE-2021-22925
+
+Reported-by: Red Hat Product Security
+Bug: https://curl.se/docs/CVE-2021-22925.html
+CVE: CVE-2021-22925
+Upstream-Status: backport from Ubuntu curl_7.68.0-1ubuntu2.6
+Signed-off-by: Mike Crowe <mac@mcrowe.com>
+---
+ lib/telnet.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/lib/telnet.c b/lib/telnet.c
+index 4bf4c652c..3347ad6d1 100644
+--- a/lib/telnet.c
++++ b/lib/telnet.c
+@@ -967,12 +967,17 @@ static void suboption(struct connectdata *conn)
+         size_t tmplen = (strlen(v->data) + 1);
+         /* Add the variable only if it fits */
+         if(len + tmplen < (int)sizeof(temp)-6) {
+-          if(sscanf(v->data, "%127[^,],%127s", varname, varval) == 2) {
+-            msnprintf((char *)&temp[len], sizeof(temp) - len,
+-                      "%c%s%c%s", CURL_NEW_ENV_VAR, varname,
+-                      CURL_NEW_ENV_VALUE, varval);
+-            len += tmplen;
+-          }
++          int rv;
++          char sep[2] = "";
++          varval[0] = 0;
++          rv = sscanf(v->data, "%127[^,]%1[,]%127s", varname, sep, varval);
++          if(rv == 1)
++            len += msnprintf((char *)&temp[len], sizeof(temp) - len,
++                             "%c%s", CURL_NEW_ENV_VAR, varname);
++          else if(rv >= 2)
++            len += msnprintf((char *)&temp[len], sizeof(temp) - len,
++                             "%c%s%c%s", CURL_NEW_ENV_VAR, varname,
++                             CURL_NEW_ENV_VALUE, varval);
+         }
+       }
+       msnprintf((char *)&temp[len], sizeof(temp) - len,
+-- 
+2.30.2
+