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[SA11888] Symantec Enterprise Firewall DNS Proxy Cache Poisoning Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Jun 18 2004 - 05:46:00 CDT

TITLE:
Symantec Enterprise Firewall DNS Proxy Cache Poisoning Vulnerability

SECUNIA ADVISORY ID:
SA11888

VERIFY ADVISORY:
http://secunia.com/advisories/11888/

CRITICAL:
Moderately critical

IMPACT:
Spoofing, Manipulation of data

WHERE:
From remote

SOFTWARE:
Symantec Enterprise Firewall (SEF) 8.x
Symantec Enterprise Firewall (SEF) 7.x

DESCRIPTION:
fryxar has reported a vulnerability in Symantec Enterprise Firewall,
which can be exploited by malicious people to poison the DNS cache.

When acting as a caching DNS server, the integrated DNS proxy
reportedly trusts any answer received from a DNS server without
checking that it actually corresponds to a query or is valid. This
can be exploited to insert fake information in the DNS cache, which
can be used to direct users to malicious web sites or just prevent
them from accessing certain web sites.

The vulnerability has been reported in versions 7.0.4 and 8.0 for
Solaris. Other versions may also be affected.

SOLUTION:
Symantec has been informed of the issue and is currently
investigating it.

Don't use the DNS proxy until a fix is available.

PROVIDED AND/OR DISCOVERED BY:
fryxar

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