Secunia Security Advisory - Eric Romang has reported a vulnerability in SILC Server and Toolkit, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
840d6f7df131dc9c02bc86cdcd8ec4b2c5f6c4d3a908af5ee97ba4bcc12f7344
----------------------------------------------------------------------
Bist Du interessiert an einem neuen Job in IT-Sicherheit?
Secunia hat zwei freie Stellen als Junior und Senior Spezialist in IT-
Sicherheit:
http://secunia.com/secunia_vacancies/
----------------------------------------------------------------------
TITLE:
SILC Server and Toolkit Insecure Temporary File Creation
SECUNIA ADVISORY ID:
SA16659
VERIFY ADVISORY:
http://secunia.com/advisories/16659/
CRITICAL:
Less critical
IMPACT:
Privilege escalation
WHERE:
Local system
SOFTWARE:
SILC Secure Internet Live Conferencing Server 1.x
http://secunia.com/product/1029/
SILC Secure Internet Live Conferencing Toolkit 0.9.x
http://secunia.com/product/5646/
DESCRIPTION:
Eric Romang has reported a vulnerability in SILC Server and Toolkit,
which can be exploited by malicious, local users to perform certain
actions on a vulnerable system with escalated privileges.
The vulnerability is caused due to temporary files being created
insecurely in "/tmp" by silcd.c to store server statistics. This can
be exploited via symlink attacks to create or overwrite arbitrary
files with the privileges of the user running the affected
application.
The vulnerability has been reported in SILC Server versions 1.0 and
prior, and in SILC Toolkit versions 0.9.12-r3 and prior.
SOLUTION:
Grant only trusted users access to affected systems.
PROVIDED AND/OR DISCOVERED BY:
Eric Romang, ZATAZ Audit.
ORIGINAL ADVISORY:
http://www.zataz.net/adviso/silc-server-toolkit-06152005.txt
----------------------------------------------------------------------
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
----------------------------------------------------------------------