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Update to 1.10.0 

- New upstream release 1.10.0
  - Adds agent forwarding support
  - Adds OpenSSH Agent support on Windows
  - Adds ECDSA key support using the Mbed TLS backend
  - Adds ECDSA cert authentication
  - Adds diffie-hellman-group14-sha256, diffie-hellman-group16-sha512,
    diffie-hellman-group18-sha512 key exchanges
  - Adds support for PKIX key reading when using ed25519 with OpenSSL
  - Adds support for EWOULDBLOCK on VMS systems
  - Adds support for building with OpenSSL 3
  - Adds support for using FIPS mode in OpenSSL
  - Adds debug symbols when building with MSVC
  - Adds support for building on the 3DS
  - Adds unicode build support on Windows
  - Restores os400 building
  - Increases min, max and opt Diffie Hellman group values
  - Improves portability of the make file
  - Improves timeout behaviour with 2FA keyboard auth
  - Various improvements to the Wincng backend
  - Fixes reading partial packet replies when using an agent
  - Fixes Diffie Hellman key exchange on Windows 1903+ builds
  - Fixes building tests with older versions of OpenSSL
  - Fixes possible multiple definition warnings
  - Fixes potential cast issues _libssh2_ecdsa_key_get_curve_type()
  - Fixes potential use after free if libssh2_init() is called twice
  - Improved linking when using Mbed TLS
  - Fixes call to libssh2_crypto_exit() if crypto hasn't been initialized
  - Fixes crash when loading public keys with no id
  - Fixes possible out of bounds read when exchanging keys
  - Fixes possible out of bounds read when reading packets
  - Fixes possible out of bounds read when opening an X11 connection
  - Fixes possible out of bounds read when ecdh host keys
  - Fixes possible hang when trying to read a disconnected socket
  - Fixes a crash when using the delayed compression option
  - Fixes read error with large known host entries
  - Fixes various warnings
  - Fixes various small memory leaks
  - Improved error handling, various detailed errors will now be reported
  - Builds are now using OSS-Fuzz
  - Builds now use autoreconf instead of a custom build script
  - cmake now respects install directory
  - Improved CI backend
  - Updated HACKING-CRYPTO documentation
  - Use markdown file extensions
  - Improved unit tests
This commit is contained in:
Paul Howarth 2021-08-30 17:28:58 +01:00
parent 258ac8bba4
commit 9784ae6dca
3 changed files with 50 additions and 137 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

130
0001-libssh2-1.9.0-CVE-2019-17498.patch
View File

@ -1,130 +0,0 @@
From a1554e78e15fc0daeb574c3dd5c87654469a3742 Mon Sep 17 00:00:00 2001
From: Will Cosgrove <will@panic.com>
Date: Fri, 30 Aug 2019 09:57:38 -0700
Subject: [PATCH] packet.c: improve message parsing (#402)
* packet.c: improve parsing of packets
file: packet.c
notes:
Use _libssh2_get_string API in SSH_MSG_DEBUG/SSH_MSG_DISCONNECT. Additional uint32 bounds check in SSH_MSG_GLOBAL_REQUEST.
Upstream-commit: dedcbd106f8e52d5586b0205bc7677e4c9868f9c
Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---
src/packet.c | 68 ++++++++++++++++++++++------------------------------
1 file changed, 29 insertions(+), 39 deletions(-)
diff --git a/src/packet.c b/src/packet.c
index 38ab629..2e01bfc 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -419,8 +419,8 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
size_t datalen, int macstate)
{
int rc = 0;
- char *message = NULL;
- char *language = NULL;
+ unsigned char *message = NULL;
+ unsigned char *language = NULL;
size_t message_len = 0;
size_t language_len = 0;
LIBSSH2_CHANNEL *channelp = NULL;
@@ -472,33 +472,23 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
case SSH_MSG_DISCONNECT:
if(datalen >= 5) {
- size_t reason = _libssh2_ntohu32(data + 1);
+ uint32_t reason = 0;
+ struct string_buf buf;
+ buf.data = (unsigned char *)data;
+ buf.dataptr = buf.data;
+ buf.len = datalen;
+ buf.dataptr++; /* advance past type */
- if(datalen >= 9) {
- message_len = _libssh2_ntohu32(data + 5);
+ _libssh2_get_u32(&buf, &reason);
+ _libssh2_get_string(&buf, &message, &message_len);
+ _libssh2_get_string(&buf, &language, &language_len);
- if(message_len < datalen-13) {
- /* 9 = packet_type(1) + reason(4) + message_len(4) */
- message = (char *) data + 9;
-
- language_len =
- _libssh2_ntohu32(data + 9 + message_len);
- language = (char *) data + 9 + message_len + 4;
-
- if(language_len > (datalen-13-message_len)) {
- /* bad input, clear info */
- language = message = NULL;
- language_len = message_len = 0;
- }
- }
- else
- /* bad size, clear it */
- message_len = 0;
- }
if(session->ssh_msg_disconnect) {
- LIBSSH2_DISCONNECT(session, reason, message,
- message_len, language, language_len);
+ LIBSSH2_DISCONNECT(session, reason, (const char *)message,
+ message_len, (const char *)language,
+ language_len);
}
+
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Disconnect(%d): %s(%s)", reason,
message, language);
@@ -539,24 +529,24 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
int always_display = data[1];
if(datalen >= 6) {
- message_len = _libssh2_ntohu32(data + 2);
-
- if(message_len <= (datalen - 10)) {
- /* 6 = packet_type(1) + display(1) + message_len(4) */
- message = (char *) data + 6;
- language_len = _libssh2_ntohu32(data + 6 +
- message_len);
-
- if(language_len <= (datalen - 10 - message_len))
- language = (char *) data + 10 + message_len;
- }
+ struct string_buf buf;
+ buf.data = (unsigned char *)data;
+ buf.dataptr = buf.data;
+ buf.len = datalen;
+ buf.dataptr += 2; /* advance past type & always display */
+
+ _libssh2_get_string(&buf, &message, &message_len);
+ _libssh2_get_string(&buf, &language, &language_len);
}
if(session->ssh_msg_debug) {
- LIBSSH2_DEBUG(session, always_display, message,
- message_len, language, language_len);
+ LIBSSH2_DEBUG(session, always_display,
+ (const char *)message,
+ message_len, (const char *)language,
+ language_len);
}
}
+
/*
* _libssh2_debug will actually truncate this for us so
* that it's not an inordinate about of data
@@ -579,7 +569,7 @@ _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
uint32_t len = 0;
unsigned char want_reply = 0;
len = _libssh2_ntohu32(data + 1);
- if(datalen >= (6 + len)) {
+ if((len <= (UINT_MAX - 6)) && (datalen >= (6 + len))) {
want_reply = data[5 + len];
_libssh2_debug(session,
LIBSSH2_TRACE_CONN,
--
2.20.1

55
libssh2.spec
View File

@ -1,14 +1,11 @@
Name: libssh2
Version: 1.9.0
Release: 8%{?dist}
Version: 1.10.0
Release: 1%{?dist}
Summary: A library implementing the SSH2 protocol
License: BSD
URL: https://www.libssh2.org/
Source0: https://libssh2.org/download/libssh2-%{version}.tar.gz
# Fix integer overflow in SSH_MSG_DISCONNECT logic (CVE-2019-17498)
Patch1: 0001-libssh2-1.9.0-CVE-2019-17498.patch
BuildRequires: coreutils
BuildRequires: findutils
BuildRequires: gcc
@ -54,7 +51,6 @@ developing applications that use libssh2.
%prep
%setup -q
%patch1 -p1
# Replace hard wired port number in the test suite to avoid collisions
# between 32-bit and 64-bit builds running on a single build-host
@ -118,6 +114,53 @@ LC_ALL=en_US.UTF-8 make -C tests check
%{_libdir}/pkgconfig/libssh2.pc
%changelog
* Mon Aug 30 2021 Paul Howarth <paul@city-fan.org> - 1.10.0-1
- Update to 1.10.0
- Adds agent forwarding support
- Adds OpenSSH Agent support on Windows
- Adds ECDSA key support using the Mbed TLS backend
- Adds ECDSA cert authentication
- Adds diffie-hellman-group14-sha256, diffie-hellman-group16-sha512,
diffie-hellman-group18-sha512 key exchanges
- Adds support for PKIX key reading when using ed25519 with OpenSSL
- Adds support for EWOULDBLOCK on VMS systems
- Adds support for building with OpenSSL 3
- Adds support for using FIPS mode in OpenSSL
- Adds debug symbols when building with MSVC
- Adds support for building on the 3DS
- Adds unicode build support on Windows
- Restores os400 building
- Increases min, max and opt Diffie Hellman group values
- Improves portability of the make file
- Improves timeout behaviour with 2FA keyboard auth
- Various improvements to the Wincng backend
- Fixes reading partial packet replies when using an agent
- Fixes Diffie Hellman key exchange on Windows 1903+ builds
- Fixes building tests with older versions of OpenSSL
- Fixes possible multiple definition warnings
- Fixes potential cast issues _libssh2_ecdsa_key_get_curve_type()
- Fixes potential use after free if libssh2_init() is called twice
- Improved linking when using Mbed TLS
- Fixes call to libssh2_crypto_exit() if crypto hasn't been initialized
- Fixes crash when loading public keys with no id
- Fixes possible out of bounds read when exchanging keys
- Fixes possible out of bounds read when reading packets
- Fixes possible out of bounds read when opening an X11 connection
- Fixes possible out of bounds read when ecdh host keys
- Fixes possible hang when trying to read a disconnected socket
- Fixes a crash when using the delayed compression option
- Fixes read error with large known host entries
- Fixes various warnings
- Fixes various small memory leaks
- Improved error handling, various detailed errors will now be reported
- Builds are now using OSS-Fuzz
- Builds now use autoreconf instead of a custom build script
- cmake now respects install directory
- Improved CI backend
- Updated HACKING-CRYPTO documentation
- Use markdown file extensions
- Improved unit tests
* Thu Jul 22 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.9.0-8
- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild

2
sources
View File

@ -1 +1 @@
SHA512 (libssh2-1.9.0.tar.gz) = 41a3ebcf84e32eab69b7411ffb0a3b6e6db71491c968602b17392cfe3490ef00239726ec28acb3d25bf0ed62700db7f4d0bb5a9175618f413865f40badca6e17
SHA512 (libssh2-1.10.0.tar.gz) = e064ee1089eb8e6cd5fa2617f4fd8ff56c2721c5476775a98bdb68c6c4ee4d05c706c3bb0eb479a27a8ec0b17a8a5ef43e1d028ad3f134519aa582d3981a3a30