Ubuntu Security Notice 4621-1 - It was discovered that netqmail did not properly handle certain input. Both remote and local attackers could use this vulnerability to cause netqmail to crash or execute arbitrary code. It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this to bypass email address validation. Various other issues were also addressed.
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Ubuntu Security Notice 4556-1 - It was discovered that netqmail did not properly handle certain input. Both remote and local attackers could use this vulnerability to cause netqmail to crash or execute arbitrary code. It was discovered that netqmail did not properly handle certain input when validating email addresses. An attacker could use this to bypass email address validation. Various other issues were also addressed.
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Gentoo Linux Security Advisory 202007-1 - Multiple vulnerabilities have been found in netqmail, the worst of which could result in the arbitrary execution of code. Versions less than 1.06-r13 are affected.
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In 2005, three vulnerabilities were discovered in qmail but were never fixed because they were believed to be unexploitable in a default installation. Qualys recently re-discovered these vulnerabilities and were able to exploit one of them remotely in a default installation.
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