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Bug #877

closed

Use secure_getenv (or equivalent) when getting env. vars. involving paths

Added by Mathieu Desnoyers almost 10 years ago. Updated over 9 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Mathieu Desnoyers
Target version:
LTTng - 2.5
Start date:
01/23/2015
Due date:
% Done:

0%

Estimated time:
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 #1

Updated by Mathieu Desnoyers over 9 years ago

  • Status changed from New to Resolved
  • Assignee set to Mathieu Desnoyers
  • Target version changed from 2.7 to 2.5

Fixed in stable-2.5, stable-2.6, master.

Master commit:

commit 13efba44993b2b2679677edb5cf75ef17849d621
Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date:   Thu Apr 23 18:45:05 2015 -0400

    Fix: use lttng_secure_getenv to handle env. vars. involving paths

    This is a security fix for applications linked against liblttng-ust
    which are exposed as setuid binaries.

    A malicious user which can run those applications could target those
    environment variable paths to locations that would allow it to create
    files in various areas of the filesystem.

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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