|
Plash Sandboxed Process TIOCSTI ioctl() Privilege Escalation
|
|
Secunia Advisory:
|
SA24498
|
|
|
Release Date:
|
2007-03-12
|
|
Last Update:
|
2007-03-14
|
|
Popularity:
|
4,160 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
Security Bypass
Privilege escalation
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Workaround
|
|
| Software: | Plash 1.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2007-1400
|
|
Description:
Mark Seaborn has reported a vulnerability in Plash, which can be exploited by malicious people to bypass certain security restrictions and gain escalated privileges.
The vulnerability is caused due to Plash not correctly restricting sandboxed processes from inserting characters to the terminal's file descriptor via the TIOCSTI ioctl(). If a shell runs on that terminal, a malicious sandboxed process can exploit this to execute arbitrary commands with the full privileges of the running shell.
The vulnerability is reported in Plash 1.17. Other versions may also be affected.
Solution:
As a workaround, the vendor recommends users to proxy streams by piping them through "cat":
cat | pola-run ... 2>&1 | cat
Provided and/or discovered by:
Mark Seaborn
Changelog:
2007-03-14: Added CVE reference.
Original Advisory:
http://plash.beasts.org/wiki/PlashIssues/TtyVulnerability
http://lists.gnu.org/archive/html/plash/2007-03/msg00000.html
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
