NTA Monitor

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New version of network scanning tool arp-scan released

15th March 2011 A new version of a respected and popular network scanning tool has been released. Read More

Tests show rise in number of vulnerabilities affecting web applications with SQL Injection and XSS most common flaws

1st March 2011 SQL injection and cross-site scripting (XSS) were the most common flaws found in web applications in 2010 according to results from tests carried out by NTA Monitor. Read More

Assess risk to manage effects of budget cuts

9th February 2011 Signs of economic recovery may be appearing in some industries, but for most organisations - particularly in the public sector - budget cuts and cost savings are here to stay for the foreseeable future. Read More

"Basic security threats not changed in 15 years"

1st February 2011 There may have been significant technological advances to the hardware and software organisations use, but according to Roy Hills, who co-founded NTA Monitor in 1996, the basic security threats have not changed in the last 15 years. Read More
Date: 3rd July 2006
Risk: Medium

A newfound flaw in Sendmail can permit attackers to launch Denial of Service attacks. The vulnerability occurs due to an error in the termination of the recursive "mime8to7()" function when performing MIME conversions. The flaw can then be exploited to cause a Sendmail process to crash when it runs out of stack space while processing a deeply nested malformed MIME message.

If the flaw is successfully exploited, it prevents queued messages from being delivered and can also fill up spare disk space with core dump files.

The vulnerability exists in versions 8.13.6 and prior; users are advised to upgrade to version 8.13.7, however, if that's not immediately available, Sendmail suggests three alternatives - install a nesting filter to block problematic messages, limit the size of incoming messages and change the queue run strategy.

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