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authorEric Wong <bofh@yhbt.net>2022-06-16 15:54:13 +0000
committerEric Wong <bofh@yhbt.net>2022-06-16 16:09:56 +0000
commit10f13b886b8a76889f5442f7347159d3677324d0 (patch)
tree5d5ef3fe9bc2384916ef8513233ed75495f61cb8 /ext/clogger_ext/clogger.c
parent4ee4e61d9bbbae0883bf51888239ffabd045d8d5 (diff)
downloadclogger-10f13b886b8a76889f5442f7347159d3677324d0.tar.gz
This doesn't affect most Rack HTTP servers since they have
strict parsers, but is safer in case one doesn't...

Influenced by CVE-2022-30123.
Diffstat (limited to 'ext/clogger_ext/clogger.c')
-rw-r--r--ext/clogger_ext/clogger.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/ext/clogger_ext/clogger.c b/ext/clogger_ext/clogger.c
index 079817c..2ec9510 100644
--- a/ext/clogger_ext/clogger.c
+++ b/ext/clogger_ext/clogger.c
@@ -447,10 +447,11 @@ static void append_request(struct clogger *c)
 {
         VALUE tmp;
 
-        /* REQUEST_METHOD doesn't need escaping, Rack::Lint governs it */
         tmp = rb_hash_aref(c->env, g_REQUEST_METHOD);
-        if (!NIL_P(tmp))
+        if (!NIL_P(tmp)) {
+                tmp = byte_xs(tmp);
                 rb_str_buf_append(c->log_buf, tmp);
+        }
 
         rb_str_buf_append(c->log_buf, g_space);