SUSE-SU-2024:0525-1: Security update for libssh

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 pkiverifydatasignature 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 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 sshchannelpolltimeout() returning SSHAGAIN 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 knownhosts parsing (T156) Fixed build issue with MinGW (T157) Fixed build with gcc 9 (T164) Fixed deprecation issues (T165)

Fixed knownhosts directory creation (T166)

Split out configuration to separate package to not mess up the library packaging and coinstallation 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 knownhosts parsing Improved documentation

Improved OpenSSL API usage for KEX, DH, and signatures

Add libssh client and server config files