Tried, Tested and Proven

Vulnerability title: World-writable Files and Directories in Symmetricom s350i

CVE: CVE-2014-5066
Vendor: Symmetricom
Product: s350i
Affected version: 2.70.15
Fixed version: N/A
Reported by: Mike Emery


It was discovered files and directories with permissions allowing them to be modified by any authenticated user, irrespective of their privilege level.

In particular:

/usr/bin/dispctl (note this file is setUID root)


World-writable files could be changed or deleted by any user on the system, which could lead to various types of attack depending on the files concerned, for example:

* Deletion or corruption of the affected files to disrupt normal business activities (e.g. Denial of Service, or to evade logging).
* Modification of programs or scripts run by other users to escalate the privileges of the attacker.
* Modification of configuration files used by more privileged programs, which could disrupt normal business operations or escalate the privileges of the attacker.

In addition, an attacker could simply abuse writable files to host their attacking tools or other illicit files; the ability to upload and hide files is a precursor to other types of attack.


Exploit code is not required

Vendor status:

30/05/2014 Advisory created
10/06/2014 Vendor contacted
09/07/2014 Vendor contact reattempted
28/07/2014 CVE obtained and provisional release date set
13/08/2014 Final vendor contact initiated
20/08/2014 First vendor response
20/08/2014 Vendor advised of release date and more information on fix time
frame requested
28/08/2014 Vendor contacted to re-emphasise release dates as no response from
previous contact was received
29/08/2014 Vendor responded requesting a discussion before release. This was
not possible due to time zone differences
29/08/2014 Published
01/09/2014 In discussion with vendor following a period of non-response


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