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From eccfca1074fc485a0b60dfb9c8385429a226bf73 Mon Sep 17 00:00:00 2001
From: Changqing Li <changqing.li@windriver.com>
Date: Fri, 16 May 2025 13:19:38 +0800
Subject: [PATCH] auth-digest: Handle missing nonce
CVE: CVE-2025-32910
Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/417/diffs?commit_id=405a8a34597a44bd58c4759e7d5e23f02c3b556a]
Signed-off-by: Changqing Li <changqing.li@windriver.com>
---
libsoup/soup-auth-digest.c | 45 ++++++++++++++++++++++++++++----------
1 files changed, 28 insertions(+), 10 deletions(-)
diff --git a/libsoup/soup-auth-digest.c b/libsoup/soup-auth-digest.c
index 0ab3499..10a8591 100644
--- a/libsoup/soup-auth-digest.c
+++ b/libsoup/soup-auth-digest.c
@@ -132,6 +132,19 @@ soup_auth_digest_get_qop (SoupAuthDigestQop qop)
return g_string_free (out, FALSE);
}
+static gboolean
+validate_params (SoupAuthDigest *auth_digest)
+{
+ SoupAuthDigestPrivate *priv = soup_auth_digest_get_instance_private (auth_digest);
+
+ if (priv->qop || priv->algorithm == SOUP_AUTH_DIGEST_ALGORITHM_MD5_SESS) {
+ if (!priv->nonce)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
static gboolean
soup_auth_digest_update (SoupAuth *auth, SoupMessage *msg,
GHashTable *auth_params)
@@ -169,17 +182,22 @@ soup_auth_digest_update (SoupAuth *auth, SoupMessage *msg,
if (priv->algorithm == -1)
ok = FALSE;
- stale = g_hash_table_lookup (auth_params, "stale");
- if (stale && !g_ascii_strcasecmp (stale, "TRUE") && *priv->hex_urp)
- recompute_hex_a1 (priv);
- else {
- g_free (priv->user);
- priv->user = NULL;
- g_free (priv->cnonce);
- priv->cnonce = NULL;
- memset (priv->hex_urp, 0, sizeof (priv->hex_urp));
- memset (priv->hex_a1, 0, sizeof (priv->hex_a1));
- }
+ if (!validate_params (auth_digest))
+ ok = FALSE;
+
+ if (ok) {
+ stale = g_hash_table_lookup (auth_params, "stale");
+ if (stale && !g_ascii_strcasecmp (stale, "TRUE") && *priv->hex_urp)
+ recompute_hex_a1 (priv);
+ else {
+ g_free (priv->user);
+ priv->user = NULL;
+ g_free (priv->cnonce);
+ priv->cnonce = NULL;
+ memset (priv->hex_urp, 0, sizeof (priv->hex_urp));
+ memset (priv->hex_a1, 0, sizeof (priv->hex_a1));
+ }
+ }
return ok;
}
@@ -359,6 +377,8 @@ soup_auth_digest_compute_response (const char *method,
if (qop) {
char tmp[9];
+ g_assert (cnonce);
+
g_snprintf (tmp, 9, "%.8x", nc);
g_checksum_update (checksum, (guchar *)tmp, strlen (tmp));
g_checksum_update (checksum, (guchar *)":", 1);
@@ -422,6 +442,9 @@ soup_auth_digest_get_authorization (SoupAuth *auth, SoupMessage *msg)
g_return_val_if_fail (uri != NULL, NULL);
url = soup_uri_to_string (uri, TRUE);
+ g_assert (priv->nonce);
+ g_assert (!priv->qop || priv->cnonce);
+
soup_auth_digest_compute_response (msg->method, url, priv->hex_a1,
priv->qop, priv->nonce,
priv->cnonce, priv->nc,
--
2.34.1
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