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Secunia Security Advisory 32366

Secunia Security Advisory 32366
Posted Oct 23, 2008
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Jeremy Brown has discovered two vulnerabilities in freeSSHd, which can be exploited by malicious users to cause a DoS (Denial of Service).

tags | advisory, denial of service, vulnerability
SHA-256 | 25b8e4165e9b4be27f178c79efe478e065601d2d334e25525a4fd6b5c09d9793

Secunia Security Advisory 32366

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Do you need accurate and reliable IDS / IPS / AV detection rules?

Get in-depth vulnerability details:
http://secunia.com/binary_analysis/sample_analysis/

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TITLE:
freeSSHd Two Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA32366

VERIFY ADVISORY:
http://secunia.com/advisories/32366/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
freeSSHd 1.x
http://secunia.com/advisories/product/9607/

DESCRIPTION:
Jeremy Brown has discovered two vulnerabilities in freeSSHd, which
can be exploited by malicious users to cause a DoS (Denial of
Service).

The vulnerabilities are caused due to NULL-pointer dereference errors
in the processing of the SFTP "rename" and "realpath" commands. These
can be exploited to crash a freeSSHd server via an overly long string
passed as an argument to the affected commands.

The vulnerabilities are confirmed in version 1.2.1.14. Other versions
may also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Jeremy Brown

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/6800
http://milw0rm.com/exploits/6812

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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/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/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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