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* gnu/packages/patches/evolution-data-server-CVE-2020-14928.patch, gnu/packages/patches/evolution-data-server-CVE-2020-16117.patch: New patches. * gnu/local.mk (dist_patch_DATA): Register them. * gnu/packages/gnome.scm (evolution-data-server): Apply them.
115 lines
4 KiB
Diff
115 lines
4 KiB
Diff
From ba82be72cfd427b5d72ff21f929b3a6d8529c4df Mon Sep 17 00:00:00 2001
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From: Milan Crha <mcrha@redhat.com>
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Date: Mon, 22 Jun 2020 13:40:17 +0200
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Subject: [PATCH] I#226 - CVE-2020-14928: Response Injection via STARTTLS in
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SMTP and POP3
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Closes https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/226
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---
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src/camel/camel-stream-buffer.c | 19 +++++++++++++++++++
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src/camel/camel-stream-buffer.h | 1 +
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src/camel/providers/pop3/camel-pop3-store.c | 2 ++
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src/camel/providers/pop3/camel-pop3-stream.c | 11 +++++++++++
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src/camel/providers/pop3/camel-pop3-stream.h | 1 +
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.../providers/smtp/camel-smtp-transport.c | 2 ++
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6 files changed, 36 insertions(+)
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diff --git a/src/camel/camel-stream-buffer.c b/src/camel/camel-stream-buffer.c
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index 3e2e0dd36..a6f605ae5 100644
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--- a/src/camel/camel-stream-buffer.c
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+++ b/src/camel/camel-stream-buffer.c
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@@ -518,3 +518,22 @@ camel_stream_buffer_read_line (CamelStreamBuffer *sbf,
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return g_strdup ((gchar *) sbf->priv->linebuf);
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}
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+
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+/**
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+ * camel_stream_buffer_discard_cache:
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+ * @sbf: a #CamelStreamBuffer
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+ *
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+ * Discards any cached data in the @sbf. The next read reads
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+ * from the stream.
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+ *
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+ * Since: 3.38
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+ **/
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+void
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+camel_stream_buffer_discard_cache (CamelStreamBuffer *sbf)
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+{
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+ g_return_if_fail (CAMEL_IS_STREAM_BUFFER (sbf));
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+
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+ sbf->priv->ptr = sbf->priv->buf;
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+ sbf->priv->end = sbf->priv->buf;
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+ sbf->priv->ptr[0] = '\0';
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+}
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diff --git a/src/camel/camel-stream-buffer.h b/src/camel/camel-stream-buffer.h
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index ef92cfd8e..094e9926b 100644
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--- a/src/camel/camel-stream-buffer.h
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+++ b/src/camel/camel-stream-buffer.h
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@@ -93,6 +93,7 @@ gint camel_stream_buffer_gets (CamelStreamBuffer *sbf,
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gchar * camel_stream_buffer_read_line (CamelStreamBuffer *sbf,
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GCancellable *cancellable,
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GError **error);
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+void camel_stream_buffer_discard_cache (CamelStreamBuffer *sbf);
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G_END_DECLS
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diff --git a/src/camel/providers/pop3/camel-pop3-store.c b/src/camel/providers/pop3/camel-pop3-store.c
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index 81c370f0a..5c9eb1eaa 100644
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--- a/src/camel/providers/pop3/camel-pop3-store.c
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+++ b/src/camel/providers/pop3/camel-pop3-store.c
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@@ -205,6 +205,8 @@ connect_to_server (CamelService *service,
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if (tls_stream != NULL) {
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camel_stream_set_base_stream (stream, tls_stream);
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+ /* Truncate any left cached input from the insecure part of the session */
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+ camel_pop3_stream_discard_cache (pop3_engine->stream);
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g_object_unref (tls_stream);
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} else {
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g_prefix_error (
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diff --git a/src/camel/providers/pop3/camel-pop3-stream.c b/src/camel/providers/pop3/camel-pop3-stream.c
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index 74bb11e61..c485b9bd6 100644
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--- a/src/camel/providers/pop3/camel-pop3-stream.c
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+++ b/src/camel/providers/pop3/camel-pop3-stream.c
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@@ -457,3 +457,14 @@ camel_pop3_stream_getd (CamelPOP3Stream *is,
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return 1;
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}
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+
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+void
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+camel_pop3_stream_discard_cache (CamelPOP3Stream *is)
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+{
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+ if (is) {
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+ is->ptr = is->end = is->buf;
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+ is->lineptr = is->linebuf;
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+ is->lineend = is->linebuf + CAMEL_POP3_STREAM_LINE_SIZE;
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+ is->ptr[0] = '\n';
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+ }
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+}
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diff --git a/src/camel/providers/pop3/camel-pop3-stream.h b/src/camel/providers/pop3/camel-pop3-stream.h
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index bb6dbb903..128c8c45a 100644
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--- a/src/camel/providers/pop3/camel-pop3-stream.h
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+++ b/src/camel/providers/pop3/camel-pop3-stream.h
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@@ -87,6 +87,7 @@ gint camel_pop3_stream_getd (CamelPOP3Stream *is,
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guint *len,
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GCancellable *cancellable,
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GError **error);
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+void camel_pop3_stream_discard_cache (CamelPOP3Stream *is);
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G_END_DECLS
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diff --git a/src/camel/providers/smtp/camel-smtp-transport.c b/src/camel/providers/smtp/camel-smtp-transport.c
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index 035baf367..1fc0f3206 100644
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--- a/src/camel/providers/smtp/camel-smtp-transport.c
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+++ b/src/camel/providers/smtp/camel-smtp-transport.c
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@@ -323,6 +323,8 @@ connect_to_server (CamelService *service,
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if (tls_stream != NULL) {
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camel_stream_set_base_stream (stream, tls_stream);
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+ /* Truncate any left cached input from the insecure part of the session */
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+ camel_stream_buffer_discard_cache (transport->istream);
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g_object_unref (tls_stream);
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} else {
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g_prefix_error (
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--
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GitLab
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