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Secunia Security Advisory 31734

Secunia Security Advisory 31734
Posted Sep 9, 2008
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Some vulnerabilities have been reported in Dns2tcp, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

tags | advisory, denial of service, vulnerability
SHA-256 | e28605067b7935408f34d0ef7c9b5770f64d3724b8ee4487a455c974c7b996d6

Secunia Security Advisory 31734

Change Mirror Download
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http://secunia.com/

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TITLE:
Dns2tcp Request / Reply Processing Signedness Vulnerability

SECUNIA ADVISORY ID:
SA31734

VERIFY ADVISORY:
http://secunia.com/advisories/31734/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Dns2tcp 0.x
http://secunia.com/product/19774/

DESCRIPTION:
Some vulnerabilities have been reported in Dns2tcp, which can be
exploited by malicious people to cause a DoS (Denial of Service) and
potentially compromise a vulnerable system.

The vulnerabilities are caused due to signedness errors within the
functions "dns_simple_decode()" in common/dns.c and "dns_decode()" in
server/dns_decode.c when processing specially crafted requests or
replies. This can be exploited to e.g. cause an out of bounds array
access and crash the service or potentially execute arbitrary code.

The vulnerabilities are reported in versions prior to 0.4.1.

SOLUTION:
Update to version 0.4.1.
http://www.hsc.fr/ressources/outils/dns2tcp/index.html.en

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.hsc.fr/ressources/outils/dns2tcp/index.html.en

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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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