----------------------------------------------------------------------

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

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

----------------------------------------------------------------------

TITLE:
pdnsd DNS Cache Poisoning and Denial of Service

SECUNIA ADVISORY ID:
SA31847

VERIFY ADVISORY:
http://secunia.com/advisories/31847/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
pdnsd 1.x
http://secunia.com/advisories/product/9584/

DESCRIPTION:
Some vulnerabilities have been reported in pdnsd, which can be
exploited by malicious people to poison the DNS cache and cause a DoS
(Denial of Service).

1) A vulnerability is caused due to pdnsd not sufficiently
randomising the query port number, which can be exploited to poison
the DNS cache.

2) An error exists within the "p_exec_query()" function in
src/dns_query.c when processing long replies with many answer
sections. This can be exploited to e.g. crash the service by sending
a specially crafted reply.

The vulnerabilities are reported in versions prior to version
1.2.7-par.

SOLUTION:
Update to version 1.2.7-par.

PROVIDED AND/OR DISCOVERED BY:
1) Dan Kaminsky, IOActive.
2) Reported by the vendor.

ORIGINAL ADVISORY:
http://www.phys.uu.nl/~rombouts/pdnsd/ChangeLog

OTHER REFERENCES:
US-CERT VU#800113:
http://www.kb.cert.org/vuls/id/800113

----------------------------------------------------------------------

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.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------