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Nya versioner av libssh2 och openSSL » Kryptoblog

Nya versioner av libssh2 och openSSL

June 13th, 2010 by Joachim Strömbergson Leave a reply »

Det har kommit nya versioner av biblioteken libssh2 och openSSL.


Version 1.2.6 av libssh2 inkluderar både en del nya funktioner och ett antal buggfixar, bland annat ett antal fixar av problem som fångats av statisk kodanalys med clang. Mer exakt innehåller den nya versionen följande förändringar:


* Added libssh2_sftp_statvfs() and libssh2_sftp_fstatvfs()
* Added libssh2_knownhost_checkp()
* Added libssh2_scp_send64(

Bug fixes:

* wait_socket: make c89 compliant and use two fd_sets for select()
* OpenSSL AES-128-CTR detection
* proper keyboard-interactive user dialog in the sftp.c example
* build procedure for VMS
* fixed libssh2.dsw to use the generated libssh2.dsp
* several Windows-related build fixes
* fail to init SFTP if session isn’t already authenticated
* many tiny fixes that address clang-analyzer warnings
* sftp_open: deal with short channel_write calls
* libssh2_publickey_init: fixed to work better non-blocking
* sftp_close_handle: add precation to not access NULL pointer
* sftp_readdir: simplified and bugfixed
* channel_write: if data has been sent, don’t return EAGAIN


Den nya versionen av OpenSSL heter 1.0.0a, vilker visar att man iaf än så länge inte övergett sin metod att namnge versioner. Den nya versionen innehåller dock bara en egentlig förändring kopplad till säkerhetsproblemet CVE-2010-1633:

RSA verification recovery in the EVP_PKEY_verify_recover function in OpenSSL 1.x before 1.0.0a, as used by pkeyutl and possibly other applications, returns uninitialized memory upon failure, which might allow context-dependent attackers to bypass intended key requirements or obtain sensitive information via unspecified vectors.

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