openSUSE Leap 42.1: 2016:1891-1 Critical: Dropbear Remote Code Execution

This update for dropbear fixes four security issues (bnc#990363):

- A format string injection vulnerability allowed remotes attacker to run

arbitrary code as root if specific usernames including "%" symbols could

be created on the target system. If a dbclient user can control

usernames or host arguments, or untrusted input is processed,

potentially arbitrary code could have been executed as the dbclient user.

- When importing malicious OpenSSH key files via dropbearconvert,

arbitrary code could have been executed as the local dropbearconvert user

- If particular -m or -c arguments were provided, as used in scripts,

dbclient could have executed arbitrary code

- dbclient or dropbear server could have exposed process memory to the

running user if compiled with DEBUG_TRACE and running with -v

Dropbear was updated to the upstream 2016.74 release, including fixes for

the following upstream issues:

- Port forwarding failure when...