From 32c0f6f240fcb041ae7df44a9bbf958d627a8212 Mon Sep 17 00:00:00 2001 From: Radoslav Kolev Date: Fri, 21 Nov 2025 11:21:18 +0200 Subject: [PATCH] wget: don't allow control characters or spaces in the URL Fixes CVE-2025-60876 malicious URL can be used to inject HTTP headers in the request. Signed-off-by: Radoslav Kolev Reviewed-by: Emmanuel Deloget CVE: CVE-2025-60876 Upstream-Status: Submitted [https://lists.busybox.net/pipermail/busybox/2025-November/091840.html] Signed-off-by: Peter Marko --- networking/wget.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/networking/wget.c b/networking/wget.c index 9ec0e67..7602563 100644 --- a/networking/wget.c +++ b/networking/wget.c @@ -536,6 +536,15 @@ static void parse_url(const char *src_url, struct host_info *h) { char *url, *p, *sp; + /* Fix for CVE-2025-60876 - don't allow control characters or spaces in the URL */ + /* otherwise a malicious URL can be used to inject HTTP headers in the request */ + const unsigned char *u = (void *) src_url; + while (*u) { + if (*u <= ' ') + bb_simple_error_msg_and_die("Unencoded control character found in the URL!"); + u++; + } + free(h->allocated); h->allocated = url = xstrdup(src_url);