DSA-273 krb4 - Cryptographic weakness

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CVE-2003-0139

Certain weaknesses in the implementation of version 4 of the Kerberos protocol krb4 in the krb5 distribution, when triple-DES keys are used to key krb4 services, allow an attacker to create krb4 tickets for unauthorized principals using a cut-and-paste attack and "ticket splicing."...

CVE-2002-1747

Vtun 2.5b1 does not authenticate forwarded packets, which allows remote attackers to inject data into user sessions without detection, and possibly control the data contents via cut-and-paste attacks on ECB...