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httpd/SOURCES/httpd-2.4.57-CVE-2024-39573...

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2.9 KiB

From 93aec0e3ca451bcc97f6d91c14d5399d13a73365 Mon Sep 17 00:00:00 2001
From: Eric Covener <covener@apache.org>
Date: Tue, 25 Jun 2024 15:28:00 +0000
Subject: [PATCH] Merge r1918553 from trunk:
block inadvertent subst of special filenames
+ cosmetic merge conflicts
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1918600 13f79535-47bb-0310-9956-ffa450edef68
---
modules/mappers/mod_rewrite.c | 38 ++++++++++++++++++++++++-----------
1 file changed, 26 insertions(+), 12 deletions(-)
diff --git a/modules/mappers/mod_rewrite.c b/modules/mappers/mod_rewrite.c
index 4be51de..0df25ee 100644
--- a/modules/mappers/mod_rewrite.c
+++ b/modules/mappers/mod_rewrite.c
@@ -4272,6 +4272,32 @@ static int apply_rewrite_rule(rewriterule_entry *p, rewrite_ctx *ctx)
return 2;
}
+ /* Add the previously stripped per-directory location prefix, unless
+ * (1) it's an absolute URL path and
+ * (2) it's a full qualified URL
+ */
+ if (!is_proxyreq && *newuri != '/' && !is_absolute_uri(newuri, NULL)) {
+ if (ctx->perdir) {
+ rewritelog((r, 3, ctx->perdir, "add per-dir prefix: %s -> %s%s",
+ newuri, ctx->perdir, newuri));
+
+ newuri = apr_pstrcat(r->pool, ctx->perdir, newuri, NULL);
+ }
+ else if (!(p->flags & (RULEFLAG_PROXY | RULEFLAG_FORCEREDIRECT))) {
+ /* Not an absolute URI-path and the scheme (if any) is unknown,
+ * and it won't be passed to fully_qualify_uri() below either,
+ * so add an implicit '/' prefix. This avoids potentially a common
+ * rule like "RewriteRule ^/some/path(.*) $1" that is given a path
+ * like "/some/pathscheme:..." to produce the fully qualified URL
+ * "scheme:..." which could be misinterpreted later.
+ */
+ rewritelog((r, 3, ctx->perdir, "add root prefix: %s -> /%s",
+ newuri, newuri));
+
+ newuri = apr_pstrcat(r->pool, "/", newuri, NULL);
+ }
+ }
+
/* Now adjust API's knowledge about r->filename and r->args */
r->filename = newuri;
@@ -4281,18 +4307,6 @@ static int apply_rewrite_rule(rewriterule_entry *p, rewrite_ctx *ctx)
splitout_queryargs(r, p->flags);
- /* Add the previously stripped per-directory location prefix, unless
- * (1) it's an absolute URL path and
- * (2) it's a full qualified URL
- */
- if ( ctx->perdir && !is_proxyreq && *r->filename != '/'
- && !is_absolute_uri(r->filename, NULL)) {
- rewritelog((r, 3, ctx->perdir, "add per-dir prefix: %s -> %s%s",
- r->filename, ctx->perdir, r->filename));
-
- r->filename = apr_pstrcat(r->pool, ctx->perdir, r->filename, NULL);
- }
-
/* If this rule is forced for proxy throughput
* (`RewriteRule ... ... [P]') then emulate mod_proxy's
* URL-to-filename handler to be sure mod_proxy is triggered