Security update for libssh

Open Source Vulnerabilities SUSE-SU-2024:0539-1

This update for libssh fixes the following issues: Update to version 0.9.8 (jsc#PED-7719): * Fix CVE-2023-6004: Command injection using proxycommand (bsc#1218209) * Fix CVE-2023-48795: Potential downgrade attack using strict kex (bsc#1218126) * Fix CVE-2023-6918: Missing checks for return values of MD functions (bsc#1218186) * Allow @ in usernames when parsing from URI composes Update to version 0.9.7 * Fix CVE-2023-1667: a NULL dereference during rekeying with algorithm guessing (bsc#1211188) * Fix CVE-2023-2283: a possible authorization bypass in pki_verify_data_signature under low-memory conditions (bsc#1211190) * Fix several memory leaks in GSSAPI handling code Update to version 0.9.6 (bsc#1189608, CVE-2021-3634) * https://git.libssh.org/projects/libssh.git/tag/?h=libssh-0.9.6 Update to version 0.9.5 (bsc#1174713, CVE-2020-16135): * CVE-2020-16135: Avoid null pointer dereference in sftpserver (T232) * Improve handling of library initialization (T222) * Fix parsing of subsecond times in SFTP (T219) * Make the documentation reproducible * Remove deprecated API usage in OpenSSL * Fix regression of ssh_channel_poll_timeout() returning SSH_AGAIN * Define version in one place (T226) * Prevent invalid free when using different C runtimes than OpenSSL (T229) * Compatibility improvements to testsuite Update to version 0.9.4: * https://www.libssh.org/2020/04/09/libssh-0-9-4-and-libssh-0-8-9-security-release/ * Fix possible Denial of Service attack when using AES-CTR-ciphers CVE-2020-1730 (bsc#1168699) Update to version 0.9.3: * Fixed CVE-2019-14889 - SCP: Unsanitized location leads to command execution (bsc#1158095) * SSH-01-003 Client: Missing NULL check leads to crash in erroneous state * SSH-01-006 General: Various unchecked Null-derefs cause DOS * SSH-01-007 PKI Gcrypt: Potential UAF/double free with RSA pubkeys * SSH-01-010 SSH: Deprecated hash function in fingerprinting * SSH-01-013 Conf-Parsing: Recursive wildcards in hostnames lead to DOS * SSH-01-014 Conf-Parsing: Integer underflow leads to OOB array access * SSH-01-001 State Machine: Initial machine states should be set explicitly * SSH-01-002 Kex: Differently bound macros used to iterate same array * SSH-01-005 Code-Quality: Integer sign confusion during assignments * SSH-01-008 SCP: Protocol Injection via unescaped File Names * SSH-01-009 SSH: Update documentation which RFCs are implemented * SSH-01-012 PKI: Information leak via uninitialized stack buffer Update to version 0.9.2: * Fixed libssh-config.cmake * Fixed issues with rsa algorithm negotiation (T191) * Fixed detection of OpenSSL ed25519 support (T197) Update to version 0.9.1: * Added support for Ed25519 via OpenSSL * Added support for X25519 via OpenSSL * Added support for localuser in Match keyword * Fixed Match keyword to be case sensitive * Fixed compilation with LibreSSL * Fixed error report of channel open (T75) * Fixed sftp documentation (T137) * Fixed known_hosts parsing (T156) * Fixed build issue with MinGW (T157) * Fixed build with gcc 9 (T164) * Fixed deprecation issues (T165) * Fixed known_hosts directory creation (T166) Update to verion 0.9.0: * Added support for AES-GCM * Added improved rekeying support * Added performance improvements * Disabled blowfish support by default * Fixed several ssh config parsing issues * Added support for DH Group Exchange KEX * Added support for Encrypt-then-MAC mode * Added support for parsing server side configuration file * Added support for ECDSA/Ed25519 certificates * Added FIPS 140-2 compatibility * Improved known_hosts parsing * Improved documentation * Improved OpenSSL API usage for KEX, DH, and signatures - Add libssh client and server config files