Socat security advisory 6 - Possible DoS with fork

Overview
  socats signal handler implementations are not async-signal-safe and can cause
  crash or freeze of socat processes

Vulnerability Id: CVE-2015-1379

Severity: Low

Details
  Socats signal handler implementations are not asnyc-signal-safe. When a signal
  is triggered while the process is within a non async-signal-safe function the
  signal handler will call a non async-signal-safe function too. POSIX specifies
  the behaviour in this situation as undefined. Dependend on involved functions,
  libraries, and operating system, the process can continue, freeze, or crash.
  Mostly this issue occurs when socat is in listening mode with fork option and
  a couple of child processes terminate at the same time.

Testcase
  none

Affected versions
  1.0.0.0 - 1.7.2.4
  2.0.0-b1 - 2.0.0-b7

Not affected or corrected versions
  1.7.3.0 and later
  2.0.0-b8 and later
        
Workaround
  none

Download
  The updated sources can be downloaded from:
    
    http://www.dest-unreach.org/socat/download/socat-1.7.3.0.tar.gz
    http://www.dest-unreach.org/socat/download/socat-2.0.0-b8.tar.gz

Credits
   Credits to Peter Lobsinger