File libssh2_org-CVE-2019-3857.patch of Package libssh2_org

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File libssh2_org-CVE-2019-3857.patch of Package libssh2_org (Revision 4119a014b54a6052f0ba9cf312d7885a)

Currently displaying revision 4119a014b54a6052f0ba9cf312d7885a , Show latest

commit 63ee1c6ec984c38013ac4630d7935505ba8c1630
Author: Will Cosgrove <will@panic.com>
Date:   Mon Mar 4 15:12:26 2019 -0800

fixed integer overflow in userauth_keyboard_interactive

diff --git include/libssh2.h include/libssh2.h
index 9ef9ff1..f4bae24 100644
--- include/libssh2.h
+++ include/libssh2.h
@@ -145,6 +145,18 @@ typedef int libssh2_socket_t;
 #define LIBSSH2_INVALID_SOCKET -1
 #endif /* WIN32 */

+#ifndef SIZE_MAX
+#if _WIN64
+#define SIZE_MAX 0xFFFFFFFFFFFFFFFF
+#else
+#define SIZE_MAX 0xFFFFFFFF
+#endif
+#endif
+
+#ifndef UINT_MAX
+#define UINT_MAX 0xFFFFFFFF
+#endif
+
 /*
  * Determine whether there is small or large file support on windows.
  */
commit 50a0e34bdcd892e67e97e936e23773c24d71bc10
Author: Will Cosgrove <will@panic.com>
Date:   Mon Mar 4 11:05:43 2019 -0800

fixed possible out zero byte/incorrect bounds allocation

diff --git src/packet.c src/packet.c
index 5f1feb8..98a013d 100644
--- src/packet.c
+++ src/packet.c
@@ -815,8 +815,15 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
                         /* set signal name (without SIG prefix) */
                         uint32_t namelen =
                             _libssh2_ntohu32(data + 9 + sizeof("exit-signal"));
-                        channelp->exit_signal =
-                            LIBSSH2_ALLOC(session, namelen + 1);
+
+                        if(namelen <= UINT_MAX - 1) {
+                            channelp->exit_signal =
+                                LIBSSH2_ALLOC(session, namelen + 1);
+                        }
+                        else {
+                            channelp->exit_signal = NULL;
+                        }
+
                         if (!channelp->exit_signal)
                             rc = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
                                                 "memory for signal name");

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File libssh2_org-CVE-2019-3857.patch of Package libssh2_org (Revision 4119a014b54a6052f0ba9cf312d7885a)

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