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Secunia Security Advisory 16659

Secunia Security Advisory 16659
Posted Sep 3, 2005
Authored by Secunia | Site secunia.com

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.

tags | advisory, local
SHA-256 | 840d6f7df131dc9c02bc86cdcd8ec4b2c5f6c4d3a908af5ee97ba4bcc12f7344

Secunia Security Advisory 16659

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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

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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.

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